I ran into bug 786191 as a result of disabling the Window Decoration plugin.
I found a workaround for that which will help for this one as well.
It isn't necessary to disable the entire plugin.
Set "Decoration Windows" to "none"
Leave other settings as they are.
This way, the window menu (alt+right click or space) will be available.
As a bonus, windows will also have shadows for borders.
I ran into bug 786191 as a result of disabling the Window Decoration plugin.
I found a workaround for that which will help for this one as well.
It isn't necessary to disable the entire plugin.
Set "Decoration Windows" to "none"
Leave other settings as they are.
This way, the window menu (alt+right click or space) will be available.
As a bonus, windows will also have shadows for borders.