Android webview crash "Fatal signal 5 (SIGTRAP)"
Try to override the back navigation functionality and close the popup yourself.
You don't need to handle all the stack navigation logic, just have a state when you are showing this popup. Apply your own navigation logic(like manually closing the popup).
void onBackPressed(){
if(isTheBuggyPopupIsOn){
closeTheBuggyPopup();
}
else{
super.onBackPressed();
}
}