GTK3 apps using GTK header bar when right-half tiled or top-right/bottom-right quarter tiled sometimes doesn't display all the right-side title buttons. See https://dl.dropboxusercontent.com/u/17480832/xfwm4_tiled/top_left_tiled.png for top left quarter tiled which always displays properly and https://dl.dropboxusercontent.com/u/17480832/xfwm4_tiled/top_right_tiled.png for same window top right quarter tiled which sometimes displays improperly when buttons moved to left side, right tiled is always fine, left tiled sometimes missing buttons. Specific to close button? or furthest-(left/right) button? Running Arch x86_64 with all the xfce4*devel (4.11.x) packages from AUR
CSD means client side decorations, ie not managed by the window manager...
The window look truncated, could be simply that the window cannot be reduced to the expected size and the right part is off screen. I cannot reproduce this here using a screen large enough.
Yes, reproduced here on a netbook using gedit, gedit won't shrink to the half of the screen and the right portion is off screen. Not sure how to handle that, maybe xfwm4 should simply refuse to tile those windows when the screen is too small...
Fixed with git commit e776f27