I have installed #3. Game crashes to desktop at the end of every battle. I will test if simply waiting for battle to end versus hitting leave battle after I'm dead makes any difference.
1) Went to a battle - quickly hit 'exit' back to garage. No crash.
2) Finished a battle. Waited for things to end. Crashed to desktop. Message came up on wargaming.net monitor that the game had crashed and had closed.
(Going to try exiting after dying before a battle closes.)
3) Downloaded and reinstalled #3. Let the battle finish and close. Went back to garage successfully. No crash. Going to keep testing.
4) After re-installing #3, this time I did NOT let the battle finish. After I died, I immediately clicked on 'return to garage'. Success. No crash.
I will update if it crashes again.