Today I had an issue when userlist dissapeared.
I found a root cause (occasionally I made it thin) and fix:
/set gui_pane_right_size 100
then switch to another channel
My main background for a recent years is MySQL DEV/DBA engineer but I’m also participating in wider range of tasks which could be likely called as DataOps/DevOps tasks. You can see my online CV here: http://catyellow.net