We have tried to reproduce this issue, but unfortunately have not been able to do so. Could you please share some more information on when exactly the bug occurs (e.g. with what units are you fighting, against which units are you fighting, etc.)? Or, even better: do you have reproduction steps that we can follow to get the game to show the buggy behavior?
Archiving as cannot reproduce for now, will continue investigating once we receive accurate information on this bug.