For my iOS game exported out of Unity LTS 2021 I have added the app icon in Xcode, and when installing the app on my iPhone the correct app icon appears everywhere (home screen, Settings etc.) expect for in the app switcher? Why is the wrong icon appearing in the app switcher?
The best thing to do here is to treat this as a system bug, and file a bug report regarding what you're seeing, along with attaching sysdiagnose logs to the report. Once you open the bug report, please post the FB number here for my reference.
If you have any questions about filing a bug report, take a look at Bug Reporting: How and Why?
— Ed Ford, DTS Engineer