In order to reproduce this bug Fire mode from Titan Launcher must be only TOP. I tried to reproduce this problem ten times in Direct mode but I never succeeded.
As soon as I switch my launcher from Direct mode to Top, I reproduced it the first time!
Direct mode is used by default - probably for this reason, many users cannot reproduce this problem.
Note! Direct / Top modes were added to Tanks DLC.
As I said, the problem initially appeared in the release of Tanks DLC