https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2754570021

Filling the coolant into my restored Maus bugged out. Entering the process shows the can filling, as in the pic, when I don't click any mouse button. Holding LMB plays the sound for the container being tipped and filling starting, but nothing happens and it stays at 0%.

I tried moving the tank, as well as completely replacing the radiators. Didn't help.

EDIT: So, apparrently it fixed itself when I refilled coolant on another tank. Still a strange bug.