Hi @Daniël Kuhlmann,
I found that PWA is running well for devices with OS version < 13 as shown in the screenshot below

And here is what happens when the app is installed on the latest iOS devices:

From our investigation, it seems to be caused by websql that is not supported anymore. And there is no option to disable the websql from Settings.
Do you have any suggestions?
Regards,
Kadek