This has happened to me a few times now, seemingly at random. Basically, an effect that causes a permanent to return to hand procs, and instead of that permanent returning to hand, it becomes tapped and stays tapped - the game also thinks it is no longer on the board. I'll try to explain further below.

1. Hard to know for sure what is exactly causing it - in my most recent game, it triggered twice - once when I used [[Chocobo Kick]] and tried to bounce a tapped forest, and once when my opponent used [[Failed Fording]] to try and bounce my [[Goblin Trapfinder]]. It also happened when I was testing my deck against Sparky - Sparky was using the blue deck and it occurred when she tried to bounce Trapfinder. I'd recommend just playing a few games with bounce effects and see if you can get it to trigger.

2. I'm playing on Steam.

3. Very similar to what the original poster mentioned, I think we experienced the same problem. Basically, it causes whatever permanent that was supposed to be bounced to just stay tapped on field instead. This tapped permanent can't be interacted with at all gameplay wise (meaning you can't target it, and doesn't count towards things like devotion, it can't be killed, sacrificed, anything that I could see). Although, if you hover your mouse over it it still pops up with the enlarged view of the card.

4. Pretty simple - those permanents should have been bounced back to hand

5. Screenshot attached. The red creature on my side is the one experiencing the bug, and so is the tapped forest in the middle (especially bad with lands, because this glitch is basically just land destruction).

6. No workaround from me, this seems like something that's gotta be fixed with code. Edit - seems to have been fixed with a simple client reset. Definitely a game-breaking bug, but seems to be easily fixed.

Current game version: 2026.59.30.12801.1279316

Also attached is the log.

Good luck bug hunting, and with the strike if that's still going on.