I'm having the same problem and bug in my app. When I try to rearrange tabs on the tab bar, I get a crash with the following description: Thread 1: "Can't add self as subview". Is there a solution in sight for this, as it's a huge problem for my app's users?

The problem still persists with iOS 26.2 beta...

Problem persists with iOS 26.2 beta 2...

The problem still persists with iOS 26.2 beta 3. This is becoming a big problem that has not been resolved for a long time and is affecting a large number of users on my application. It forces us to consider custom solutions for this problem in the future.