Crash on selected game
The get_selection function from __on_selected_game method can be null and raise an error when trying to use the selected result.
Traceback (most recent call last):
File "~/.local/lib/python3.7/site-packages/geode_gem/ui/interface.py", line 5935, in __on_selected_game
self.treeview_games.get_selection().unselect_all()
AttributeError: 'NoneType' object has no attribute 'unselect_all'