I have watched the video, and it is normal there. BetHog team has designed the game in that way. The game is playable, but you will fail to cashout on a desired multiplier if you try to do it manually.
Did you experience that yourself (unresponsive
cashout button)?
If you are unable to manually to cashout at the desired multiplier then this is a serious issue that needs to be fixed asap as it may cause losses for players.
However, I guess the issue is only with the animation which doesn’t affect the game's functionality.