Anytime I have letter 'w'(lower case) in the text field of a TextInput or Label, the whole application crushes with "virtual keyboard not allowed, single mode, not docked" error. Surprisingly, all keys work including 'W'(upper case). below is my code. please note the returnedWidget is built on a BoxLayout widget.
<returnedWidget>:
orientation: 'vertical'
TextInput:
id: my_input
font_size: 150
size_hint_y: None
height:200
text: 'w'
FloatLayout:
Scatter:
Label:
text: 'w'
font_size: 150
I don't know how to get around this.
It seems to be font_size related bug. With font_size: 150 or 160 it crashes. But for example with 140, 170, 180 it works fine.
I submitted following issue: https://github.com/kivy/kivy/issues/8108
Based on this the workaround is to add on top of your python script:
import os
os.environ['KIVY_TEXT'] = 'pil'
The second working workaround is to manually update library:
venv\share\sdl2\bin\SDL2_ttf.dll
from 2.0.18 to latest one 2.20.1: https://github.com/libsdl-org/SDL_ttf/releases/download/release-2.20.1/SDL2_ttf-2.20.1-win32-x64.zip
https://github.com/libsdl-org/SDL_ttf/releases
I hope Kivy will upgrade it's dependent library SDL_ttf soon.