When all players have played a card, taking back your card fails the first time
When all cards are on the table, and you drag your card back to your hand, two commands are sent to the back-end:
(1) - voting your card as winner (because you clicked your card) (2) - taking back your card
because both events arrive shortly after each other, saving the 2nd event fails.
This could be fixed by implementing a retry-mechanism in the command bus, but this is a lot of work for a use case that's often needed. Moreover, you dragging the card back the 2nd time seems to work.
This is not an urgent ticket to fix. But it is the cause of #192 (closed).