Some more info, without which that session file isn't much use:
The display is 1920x1200. Ignore the bottom edge, since that has a panel on it.
The caja window is @ 791 x, + 1111 w = 1,902. The x="-10" for a window on the LHS means the borders are that wide (even though they clearly aren't, so there's some other adjustments going on for whatever reason) so that's 1912, and the 8px guess was dead on.
Some more info, without which that session file isn't much use:
The display is 1920x1200. Ignore the bottom edge, since that has a panel on it.
The caja window is @ 791 x, + 1111 w = 1,902. The x="-10" for a window on the LHS means the borders are that wide (even though they clearly aren't, so there's some other adjustments going on for whatever reason) so that's 1912, and the 8px guess was dead on.
I'll upload a screenshot as well.