Bug - Can't put cards down

I periodically have aproblem with your card games where a card 'sticks' to the cursor and I can't put it down again.

Annoyingly, this tends to happen when I'm doing well!currently, I've cleared 37 cards on Alternation Solitaire and now I've got a Queen who won't move onto the King : (

The only 'solution' I've found is to refresh the page and start a new game. Any better ideas?

Thanks

The problem is now fixed. Please clear your browser cache and reload the game to have the changes take effect.