I have something similar when I play puzzle rush... refreshing solves the problem.
Bughouse Bug!

So, I'm in a Bug Swiss jest now…and my partner and I are rated considerably stronger than the opponents.
I have attacking chances. B on c4, f7 relatively open…what's not to love?
I grab a B to drop on b3, batterying on f7…and…
Nothing doing! The interface won't let me drop a piece! I get the red-circle-with-a-slash icon, telling me I can do nothing with that piece.
All these pieces and pawns piling up, and I can't use any of them. I'm playing, like, down 5 pieces.
We lose.
Another game. Maybe that just happened once?
Nope. Again, all these pieces that I couldn't use. So we lost again. I left the tourney.
Really strange. (I reported it to chesscom.) Has anyone seen this bug before?
Try posting on chess.com beta, someone there probably knows
So, I'm in a Bug Swiss jest now…and my partner and I are rated considerably stronger than the opponents.
I have attacking chances. B on c4, f7 relatively open…what's not to love?
I grab a B to drop on b3, batterying on f7…and…
Nothing doing! The interface won't let me drop a piece! I get the red-circle-with-a-slash icon, telling me I can do nothing with that piece.
All these pieces and pawns piling up, and I can't use any of them. I'm playing, like, down 5 pieces.
We lose.
Another game. Maybe that just happened once?
Nope. Again, all these pieces that I couldn't use. So we lost again. I left the tourney.
Really strange. (I reported it to chesscom.) Has anyone seen this bug before?