I'm experiencing a bug with the treebar, it can happen in various situations, here I got it on two videos, the first one is buggy at 00:30 after I closed a channel list
On the second video, it bugs after creating a new server
You can see after that the server loses its '+-' sign to expand/collapse the server.
Tested on 7.36 but I've seen it in previous version, around 7.34
Bug treebar 1 Bug treebar 2 
