Unable to switch screens after on_press of button in iOS simulator

[David Archibald]

Switching screens works fine on my Mac (just running my python main.py file), but when I try via iOS (iPhone and Simulator) I get stuck.  Pressing button does not bring me to the second screen (drawing screen). Interestingly when moving and pressing on the mouse, the app print the coordinates as it should. So technically I am on the second screen, but I can see only the first one.

 

I don't get any error messages. 

 

kivy: 1.10.1

python: 2.7.16

Xcode: 10.2.1

Mac Mojave

 

Code:

https://github.com/ksgfan/ApplePen/tree/master

 

Where schould I look for the solution?

[David Archibald]

I solved the problem by changing FadeTransition() to NoTransition() in kv file. 

Still, any idea, why the FadeTransition does not work?