Google Maps polylines ignore caps and joints on iOS

### What package does this bug report belong to?

google_maps_flutter

### What target platforms are you seeing this bug on?

iOS

### Have you already upgraded your packages?

Yes

### Dependency versions

<details><summary>pubspec.lock</summary>

```lock
# Generated by pub
# See https://dart.dev/tools/pub/glossary#lockfile
packages:
  async:
    dependency: transitive
    description:
      name: async
      sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
      url: "https://pub.dev"
    source: hosted
    version: "2.11.0"
  boolean_selector:
    dependency: transitive
    description:
      name: boolean_selector
      sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
      url: "https://pub.dev"
    source: hosted
    version: "2.1.1"
  characters:
    dependency: transitive
    description:
      name: characters
      sha256: "04a925763edad70e8443c99234dc3328f442e811f1d8fd1a72f1c8ad0f69a605"
      url: "https://pub.dev"
    source: hosted
    version: "1.3.0"
  clock:
    dependency: transitive
    description:
      name: clock
      sha256: cb6d7f03e1de671e34607e909a7213e31d7752be4fb66a86d29fe1eb14bfb5cf
      url: "https://pub.dev"
    source: hosted
    version: "1.1.1"
  collection:
    dependency: transitive
    description:
      name: collection
      sha256: a1ace0a119f20aabc852d165077c036cd864315bd99b7eaa10a60100341941bf
      url: "https://pub.dev"
    source: hosted
    version: "1.19.0"
  csslib:
    dependency: transitive
    description:
      name: csslib
      sha256: "09bad715f418841f976c77db72d5398dc1253c21fb9c0c7f0b0b985860b2d58e"
      url: "https://pub.dev"
    source: hosted
    version: "1.0.2"
  cupertino_icons:
    dependency: "direct main"
    description:
      name: cupertino_icons
      sha256: ba631d1c7f7bef6b729a622b7b752645a2d076dba9976925b8f25725a30e1ee6
      url: "https://pub.dev"
    source: hosted
    version: "1.0.8"
  fake_async:
    dependency: transitive
    description:
      name: fake_async
      sha256: "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78"
      url: "https://pub.dev"
    source: hosted
    version: "1.3.1"
  flutter:
    dependency: "direct main"
    description: flutter
    source: sdk
    version: "0.0.0"
  flutter_lints:
    dependency: "direct dev"
    description:
      name: flutter_lints
      sha256: "5398f14efa795ffb7a33e9b6a08798b26a180edac4ad7db3f231e40f82ce11e1"
      url: "https://pub.dev"
    source: hosted
    version: "5.0.0"
  flutter_plugin_android_lifecycle:
    dependency: transitive
    description:
      name: flutter_plugin_android_lifecycle
      sha256: "615a505aef59b151b46bbeef55b36ce2b6ed299d160c51d84281946f0aa0ce0e"
      url: "https://pub.dev"
    source: hosted
    version: "2.0.24"
  flutter_test:
    dependency: "direct dev"
    description: flutter
    source: sdk
    version: "0.0.0"
  flutter_web_plugins:
    dependency: transitive
    description: flutter
    source: sdk
    version: "0.0.0"
  google_maps:
    dependency: transitive
    description:
      name: google_maps
      sha256: "4d6e199c561ca06792c964fa24b2bac7197bf4b401c2e1d23e345e5f9939f531"
      url: "https://pub.dev"
    source: hosted
    version: "8.1.1"
  google_maps_flutter:
    dependency: "direct main"
    description:
      name: google_maps_flutter
      sha256: "209856c8e5571626afba7182cf634b2910069dc567954e76ec3e3fb37f5e9db3"
      url: "https://pub.dev"
    source: hosted
    version: "2.10.0"
  google_maps_flutter_android:
    dependency: transitive
    description:
      name: google_maps_flutter_android
      sha256: "1b69fbb3ab76e7a7dfcf25e60f32f81ae5d9b88285343eecb5479116d54be869"
      url: "https://pub.dev"
    source: hosted
    version: "2.14.12"
  google_maps_flutter_ios:
    dependency: transitive
    description:
      name: google_maps_flutter_ios
      sha256: "6f798adb0aa1db5adf551f2e39e24bd06c8c0fbe4de912fb2d9b5b3f48147b02"
      url: "https://pub.dev"
    source: hosted
    version: "2.13.2"
  google_maps_flutter_platform_interface:
    dependency: transitive
    description:
      name: google_maps_flutter_platform_interface
      sha256: a951981c22d790848efb9f114f81794945bc5c06bc566238a419a92f110af6cb
      url: "https://pub.dev"
    source: hosted
    version: "2.9.5"
  google_maps_flutter_web:
    dependency: transitive
    description:
      name: google_maps_flutter_web
      sha256: ff39211bd25d7fad125d19f757eba85bd154460907cd4d135e07e3d0f98a4130
      url: "https://pub.dev"
    source: hosted
    version: "0.5.10"
  html:
    dependency: transitive
    description:
      name: html
      sha256: "1fc58edeaec4307368c60d59b7e15b9d658b57d7f3125098b6294153c75337ec"
      url: "https://pub.dev"
    source: hosted
    version: "0.15.5"
  leak_tracker:
    dependency: transitive
    description:
      name: leak_tracker
      sha256: "7bb2830ebd849694d1ec25bf1f44582d6ac531a57a365a803a6034ff751d2d06"
      url: "https://pub.dev"
    source: hosted
    version: "10.0.7"
  leak_tracker_flutter_testing:
    dependency: transitive
    description:
      name: leak_tracker_flutter_testing
      sha256: "9491a714cca3667b60b5c420da8217e6de0d1ba7a5ec322fab01758f6998f379"
      url: "https://pub.dev"
    source: hosted
    version: "3.0.8"
  leak_tracker_testing:
    dependency: transitive
    description:
      name: leak_tracker_testing
      sha256: "6ba465d5d76e67ddf503e1161d1f4a6bc42306f9d66ca1e8f079a47290fb06d3"
      url: "https://pub.dev"
    source: hosted
    version: "3.0.1"
  lints:
    dependency: transitive
    description:
      name: lints
      sha256: c35bb79562d980e9a453fc715854e1ed39e24e7d0297a880ef54e17f9874a9d7
      url: "https://pub.dev"
    source: hosted
    version: "5.1.1"
  matcher:
    dependency: transitive
    description:
      name: matcher
      sha256: d2323aa2060500f906aa31a895b4030b6da3ebdcc5619d14ce1aada65cd161cb
      url: "https://pub.dev"
    source: hosted
    version: "0.12.16+1"
  material_color_utilities:
    dependency: transitive
    description:
      name: material_color_utilities
      sha256: f7142bb1154231d7ea5f96bc7bde4bda2a0945d2806bb11670e30b850d56bdec
      url: "https://pub.dev"
    source: hosted
    version: "0.11.1"
  meta:
    dependency: transitive
    description:
      name: meta
      sha256: bdb68674043280c3428e9ec998512fb681678676b3c54e773629ffe74419f8c7
      url: "https://pub.dev"
    source: hosted
    version: "1.15.0"
  path:
    dependency: transitive
    description:
      name: path
      sha256: "087ce49c3f0dc39180befefc60fdb4acd8f8620e5682fe2476afd0b3688bb4af"
      url: "https://pub.dev"
    source: hosted
    version: "1.9.0"
  plugin_platform_interface:
    dependency: transitive
    description:
      name: plugin_platform_interface
      sha256: "4820fbfdb9478b1ebae27888254d445073732dae3d6ea81f0b7e06d5dedc3f02"
      url: "https://pub.dev"
    source: hosted
    version: "2.1.8"
  sanitize_html:
    dependency: transitive
    description:
      name: sanitize_html
      sha256: "12669c4a913688a26555323fb9cec373d8f9fbe091f2d01c40c723b33caa8989"
      url: "https://pub.dev"
    source: hosted
    version: "2.1.0"
  sky_engine:
    dependency: transitive
    description: flutter
    source: sdk
    version: "0.0.0"
  source_span:
    dependency: transitive
    description:
      name: source_span
      sha256: "53e943d4206a5e30df338fd4c6e7a077e02254531b138a15aec3bd143c1a8b3c"
      url: "https://pub.dev"
    source: hosted
    version: "1.10.0"
  stack_trace:
    dependency: transitive
    description:
      name: stack_trace
      sha256: "9f47fd3630d76be3ab26f0ee06d213679aa425996925ff3feffdec504931c377"
      url: "https://pub.dev"
    source: hosted
    version: "1.12.0"
  stream_channel:
    dependency: transitive
    description:
      name: stream_channel
      sha256: ba2aa5d8cc609d96bbb2899c28934f9e1af5cddbd60a827822ea467161eb54e7
      url: "https://pub.dev"
    source: hosted
    version: "2.1.2"
  stream_transform:
    dependency: transitive
    description:
      name: stream_transform
      sha256: ad47125e588cfd37a9a7f86c7d6356dde8dfe89d071d293f80ca9e9273a33871
      url: "https://pub.dev"
    source: hosted
    version: "2.1.1"
  string_scanner:
    dependency: transitive
    description:
      name: string_scanner
      sha256: "688af5ed3402a4bde5b3a6c15fd768dbf2621a614950b17f04626c431ab3c4c3"
      url: "https://pub.dev"
    source: hosted
    version: "1.3.0"
  term_glyph:
    dependency: transitive
    description:
      name: term_glyph
      sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
      url: "https://pub.dev"
    source: hosted
    version: "1.2.1"
  test_api:
    dependency: transitive
    description:
      name: test_api
      sha256: "664d3a9a64782fcdeb83ce9c6b39e78fd2971d4e37827b9b06c3aa1edc5e760c"
      url: "https://pub.dev"
    source: hosted
    version: "0.7.3"
  vector_math:
    dependency: transitive
    description:
      name: vector_math
      sha256: "80b3257d1492ce4d091729e3a67a60407d227c27241d6927be0130c98e741803"
      url: "https://pub.dev"
    source: hosted
    version: "2.1.4"
  vm_service:
    dependency: transitive
    description:
      name: vm_service
      sha256: f6be3ed8bd01289b34d679c2b62226f63c0e69f9fd2e50a6b3c1c729a961041b
      url: "https://pub.dev"
    source: hosted
    version: "14.3.0"
  web:
    dependency: transitive
    description:
      name: web
      sha256: cd3543bd5798f6ad290ea73d210f423502e71900302dde696f8bff84bf89a1cb
      url: "https://pub.dev"
    source: hosted
    version: "1.1.0"
sdks:
  dart: ">=3.6.0 <4.0.0"
  flutter: ">=3.24.0"

```

</details>


### Steps to reproduce

1. Run the attached code sample on iOS

### Expected results

The polyline uses rounded caps and joints as specified in the code.

Here's how it looks like on Android:

![Image](https://github.com/user-attachments/assets/e9028700-1b5d-483a-9900-61ffc5a0012a)

Here's the same thing on the Web:

![Image](https://github.com/user-attachments/assets/c24f7ca4-76f5-4d1b-8596-9d92488d8249)

### Actual results

The polyline ignores the startCap, endCap and joint settings:

![Image](https://github.com/user-attachments/assets/7fb48539-be91-49fe-ad1c-44f8577d4ee8)

### Code sample

<details open><summary>Code sample</summary>

```dart
import 'package:flutter/material.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';

class PolylinesSample extends StatelessWidget {
  const PolylinesSample({super.key});

  @override
  Widget build(BuildContext context) {
    return GoogleMap(
      initialCameraPosition: CameraPosition(target: LatLng(49, -23)),
      polylines: {
        Polyline(
          polylineId: PolylineId('titanic route'),
          points: [
            LatLng(50.90, -1.41), // Southampton
            LatLng(49.65, -1.60), // Cherbourg
            LatLng(49.77, -6.71),
            LatLng(51.83, -8.28), // Cobh
            LatLng(50.96, -8.58),
            LatLng(41.75, -49.90), // Wreck
          ],
          startCap: Cap.roundCap,
          endCap: Cap.roundCap,
          jointType: JointType.round,
          width: 5,
          color: Colors.red,
          geodesic: true,
        ),
      },
    );
  }
}

```

</details>


### Screenshots or Videos

<details open>
<summary>Screenshots / Video demonstration</summary>

See above.

</details>


### Logs

<details open><summary>Logs</summary>

```console
Launching lib/main.dart on iPhone 15 Pro Max in debug mode...
Running pod install...
Running Xcode build...
Xcode build done.                                           49.0s
Debug service listening on ws://127.0.0.1:62829/5JQQAME6fwo=/ws
Syncing files to device iPhone 15 Pro Max...
```

</details>


### Flutter Doctor output

<details open><summary>Doctor output</summary>

```console
[✓] Flutter (Channel stable, 3.27.2, on macOS 14.7 23H124 darwin-arm64, locale en-US)
    • Flutter version 3.27.2 on channel stable at /Users/filiph/fvm/versions/stable
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 68415ad1d9 (8 days ago), 2025-01-13 10:22:03 -0800
    • Engine revision e672b006cb
    • Dart version 3.6.1
    • DevTools version 2.40.2

[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.0)
    • Android SDK at /Users/filiph/Library/Android/sdk
    • Platform android-35, build-tools 35.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 21.0.3+-79915917-b509.11)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 16.2)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 16C5032a
    • CocoaPods version 1.16.2

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2024.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 21.0.3+-79915917-b509.11)

[✓] IntelliJ IDEA Ultimate Edition (version 2024.3.1.1)
    • IntelliJ at /Users/filiph/Applications/IntelliJ IDEA Ultimate.app
    • Flutter plugin version 83.0.4
    • Dart plugin version 243.23177

[✓] VS Code (version 1.92.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.84.0

[✓] Connected device (5 available)
    • sdk gphone64 arm64 (mobile)     • emulator-5554                        • android-arm64  • Android 14 (API 34) (emulator)
    • iPhone 15 Pro Max (mobile)      • C5B165A3-9EAA-499F-888E-94DE14BDD75A • ios            • com.apple.CoreSimulator.SimRuntime.iOS-17-0 (simulator)
    • macOS (desktop)                 • macos                                • darwin-arm64   • macOS 14.7 23H124 darwin-arm64
    • Mac Designed for iPad (desktop) • mac-designed-for-ipad                • darwin         • macOS 14.7 23H124 darwin-arm64
    • Chrome (web)                    • chrome                               • web-javascript • Google Chrome 131.0.6778.266

[✓] Network resources
    • All expected network resources are available.

• No issues found!

```

</details>


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Google Maps polylines ignore caps and joints on iOS #161950

What package does this bug report belong to?

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Actual results

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Google Maps polylines ignore caps and joints on iOS #161950

Description

What package does this bug report belong to?

What target platforms are you seeing this bug on?

Have you already upgraded your packages?

Dependency versions

Steps to reproduce

Expected results

Actual results

Code sample

Screenshots or Videos

Logs

Flutter Doctor output

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions