There is a little bug in games vs machines. Need Senpai here.

Not really a big thing, but people may still encounter it.

When playing games vs machine from position there is a bug. If you click back in moves list and then click forward in moves list (until then end) you will be unable to move pieces.

Steps:
1. Click "Play with a machine".
2. Select variant "From position".
3. Paste this "r2qkbnr/1Q1bpppp/8/pp6/2pP4/2N1P3/1P3PPP/R1B1KBNR b KQkq - 1 9" into the field. This doens't matter. It works with all positions.
4. Pick Time control "Unlimited". This really doesn't matter.
5. Pick 4th level of stockfish. This doesn't matter, I just want to make sure that you do the same things to encounter the bug.
6. Choose white pieces. This doesn't matter either. :(
7. Move Qf3. Doens't matter where you go, bug still happens.
8. Wait for machine move.
9. In moves list click back 3 times.
10. Now click forward 3 times.
11. Now you should be unable to move any pieces even tho(nais ingrish) it's your move.

Reproducion rate 10/10
I tried 4 times with diffirent positions, pieces, levels of stockfish.

I think there is posibility for this to occur in normal games with human player.

Way to fix this is to click "propose a takeback" and then do the same move.

wait.. you play Qf3 and he play nh6. That's only 2 moves,how can you click back 3 times???

Because it's black's turn first, and I pick white. In stockfish lvl 4 machine usually moves Rb8 first.

Reproduced as "From position" when black starts. Against both computer and friend.

Workaround is to reload the page, usually F5.

Damn. If this can happen vs players then it's real bug. I know how to fix the bug, but still, some people may not know.

will fix.

Since I'm here. I love you!!!

Looks like senpai noticed you. :)

That's exacly what I wanted to write, but then I thought that Senpai may missunderstand that... You know...