Fullscreen editor witdh is 10px too narrow

[mikkelbreum]

wp-admin/includes/post.php on line 1777 (WP 3.2.1) it says:

$width = $width + 10; compensate for the padding

But since the padding it's compensating for is 10px for both sides, it should to be changed to:

$width = $width + 20; compensate for the 10px left and right padding

I've tested changing the code as suggested here, and it fixes the problem.

Thats it. The container is simply always 10px less wide than the $content_width which makes it difficult to use with a carefully designed editor stylesheet as it will break floating elements to new lines etc.

This problem only occurs when the editor is in the full width (distraction free) mode.

[ocean90]

#18138