iOS 26 – Build succeeds after manually changing Max SDK version, but app crashes on launch

Development Platform & Builds Mobile
,
6

I’m having the same issue with my app
UE 5.4
Xcode 16.0
iOS18 - runs fine
iOS26 - crashes on launch

I’ve tried a couple of different Xcode versions, including xcode26, and get the same result.

I’m now testing using the FirstPerson sample project and i’m seeing the same behavior.

I found this post, which sounds like a fix may come in UE5.7. But this doesn’t help me as i really need to stay on UE5.4

If this is indeed the issue, then it should affect anyone trying to build for iOS in UE5.4, 5.5, & 5.6?