Quote Originally Posted by AndreasMeyer View Post
Please check your workspace settings:

# gnome-tweak-tool
=> workspaces

Should be: static, 1, on
I need 2 workspaces, and thats why it's 2 on your mentioned settings. And for my case, i've already checked, when that happen, window lists vanish from taskbar, it cant even visible from another workspaces.

So, please help me to supply some log files, if any, when that happen. I think it may be some bug