Hello TankiX this bug may or may not be game breaking.
On the map ''Sandbox'' its possible to get out of the Battle area thanks to the bigger walls next to the small walls.
A picture of the bug.
This issue is known and was during the Closed Beta Testing and now (OBT) if u get out of the arena on any map
you would Self-Destruct automatically on as in Tanki Online.
This was posted during the CBT btw
Customer support service by UserEcho