Hello Claude31, first i realized it in my project that the memory was increasing a lot for one specific ViewController, i was searching for a long time, till i came up to the datePicker with the inline style. Then i created a new project, what i explained on the top of this thread. If you run this simple 2 ViewController app with the datePicker on the second viewController and open the second ViewController and closing it 20x or so, the memory will increase the whole time and it will never been released. Iam using Xcode 12.2 and macOS Catalina (Version 10.15.7).

No sorry I accidentally clicked on the chechmark, while answering to you question 😅 This is the first time Iam using the developer forum from apple. The problem is still not solved...