File "kivy/_clock.pyx", line 697, in kivy._clock.CyClockBase._process_events_before_frame
  File "kivy/_clock.pyx", line 218, in kivy._clock.ClockEvent.tick
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/Electrum/kivy/uix/textinput.py", line 2101, in _update_graphics
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/Electrum/kivy/uix/textinput.py", line 2139, in _update_graphics_selection
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/Electrum/kivy/uix/textinput.py", line 2161, in _draw_selection