The following code causes an app to crash instantly:
from jnius import autoclass
PythonActivity = autoclass('org.renpy.android.PythonActivity')
ac = PythonActivity.mActivity
I have encountered this in a Kivy app I've built with buildozer, and have seen the issue across multiple devices. I have also reproduced this issue in the remote shell. I had not seen this occur when using the old toolchain.