Hey, there are no memory leaks that I'm aware of (there were a few, but we plugged them in recent months). If you know differently, I'd appreciate an issue report.
In the beginning I wa very entusiastic and switched from tmux to zellij on remote machines, but as I usually have btop running in a tab it would die in a day or two, so now I'm back to using tmux on remote machines and reserve zellij for local (and make sure I don't run btop in a tab).
Otherwise, I'll try your reproduction myself and will fix if I can reproduce. Thanks.
I will append a comment to the Microsoft GitHub issue mentioned above a little later.
I'm always running the latest zellij, but I'll start btop in a tab right away and see what happens.
I did mention it in https://github.com/zellij-org/zellij/issues/1625#issuecommen... and noticed the issue is still open, so I haven't tried btop in zellij since v0.36.0.