[Bug]: version 33.0.0 on macOS breaks Dark Mode support in Settings window #9683

⚠️ Before submitting, please verify the following: ⚠️

• This is a bug, not a question or a configuration issue.
• This issue is not already reported on Github (I've searched it).
• Nextcloud Server and Desktop Client are up to date. See Server Maintenance and Release Schedule and Desktop Releases for supported versions.
• I agree to follow Nextcloud's Code of Conduct

Bug description

I just updated from Nextcloud Desktop 4.x to Nextcloud Desktop 33.0.0 on macOS, and when I opened the Settings window (to reauthorize sync folders), I immediately noticed that Dark Mode support was broken:

Steps to reproduce

Open the Settings window on macOS after updating to (or installing) Nextcloud Desktop 33.0.0

Expected behavior

The Settings window should properly support macOS Dark Mode

Which files are affected by this bug

n/a (this is a GUI bug)

Operating system

macOS

Which version of the operating system you are running.

macOS Tahoe 26.3.1 (25D2128)

Package

Official macOS 12+ universal pkg

Nextcloud Server version

Nextcloud Hub 10 (31.0.7)

Nextcloud Desktop Client version

Nextcloud Desktop 33.0.0

Is this bug present after an update or on a fresh install?

Updated to a major version (ex. 3.16.3 to 3.17.0)

Are you using the Nextcloud Server Encryption module?

Encryption is Enabled

Are you using an external user-backend?

• Default internal user-backend
• LDAP/ Active Directory
• SSO - SAML
• Other

Nextcloud Server logs

Additional info

I haven't checked on other platforms, but I wouldn't be surprised if the GUI redesign also broke Dark Mode support on Linux or Windows, as well.