Randomly lose prefix key

[kshensovato]

I found that I would lose prefix key randomly. Basically none of the prefix + some_charactor would work. The only way to get out of it is to run tmux kill-server and restart the tmux.

I'm not 100% sure but looks like it happens more often in full-screen (zoomed) mode. Has anyone seen this problem? My tmux version is 3.4, running on Ubuntu 24.04.