I don't use XFCE, but maybe it's possible to fix this with an xfwm4 theme? The theme I used on sawfish back in the day had a similar 1-pixel grab area, and I w

I don't use XFCE, but maybe it's possible to fix this with an xfwm4 theme? The theme I used on sawfish back in the day had a similar 1-pixel grab area, and I was able to change it by forking the theme and modifying it.