Missing textures on Safari iOS15

Questions
1

Hey,

after updating to iOS15/iPadOS15, some model textures are missing. It seems more like a bug in Safari, but maybe some of you have an idea/solution/workaround.

For a quick look you can visit http://rundgang.stasihaft-dresden.de/?room=haftkeller, which jumps right into a room, where the problems gets instantly visible.

Here is a image which shows the difference in comparison:

Compare iOS14 > 15
Compare iOS14 > 15832×814 109 KB

Here you can find the model (only the room, no people):
http://rundgang.stasihaft-dresden.de/content/rooms/haftkeller/model/haftkeller-default.glb

If you download the model and and upload it to https://gltf-viewer.donmccurdy.com you can see the difference as well when running this on iOS 14/macOS and iOS15.

Thanks and cheers

Matthias

2

Hey, I don’t really think I can fix your problem, but, is this normal (image below)? if it’s not, maybe it isn’t only a Safari bug. Good luck. Btw I am using google chrome.

image
image1920×928 61.7 KB

3

Yes, those black surroundings are correct and part of the artwork. Your screenshot looks as it should. On Chrome I have no issues as well.

4

Solution found: Reboot your device. Nice to see, that rebooting sometimes really helps.

5

Sadly, the problem returns after some time. Rebooting helps, but not for long.

Here is another topic which tries to solve the problem: