Created attachment 652890 [details] emerge --info When maximizing xfce4-terminal by dragging window to top of the screen, there is glitch that make terminal rendered wrong (see attached screenshot), after unmaximizing window terminal looks fine. While in glitched state I can write to terminal but text appears after unmaximizing window. Problem does not occur with other windows or when maximizing terminal by double clicking to title bar.
Created attachment 652892 [details] glitch
I forgot to add: downgrading xfwm4 to 4.14.4 solve this issue.
Problem solved in xfwm4-4.16.0