iOS Question [SOLVED] B4XPages / B4XPage_Disappear when using built in back button

I made a small test app with 3 pages and exchange values between the pages with several ways.
Built in back button fires disappear event.

This brings me a bit into trouble as in the App I am working on the things I tried using disappear hitting the built in back button does not work properly. Looks like the error is again in front of the keyboard ?