Hey there,
whenever i add new cards and resize the window you add new cards with a few times, sooner or later Anki crashes. Some goes for when I go to the page where you can manage your cards and resize the proportions between A: list of cards and B: front and back of selected card.
In both cases it sometimes works for 2 times resizing but after a max of 5 seconds Anki crashes.
Cheers
Ethem