Selected Development team cannot be saved

Switching kits or Release/Debug set Development team to be Default even though something else was set before switching.

How to reproduce
1. Choose iOS kit e.g. "Qt 5.14.1 for iOS" kit, select some development team in
Projects > Build Settings -> iOS Settings -> Development team
2. Change the kit to something else e.g. "Qt5.15.0 for iOS"
3. Go back to "Qt 5.14.1 for iOS" , the development team is set to Default
(not the one that is set in #1)

"Affects versions" are the ones used for reproducing the problem
but other version may have the same defect.