The box is covering the top of the section on the far right side of the screen. This is frustrating because the box covers up the add button for characters, jukebox, and macros.
I am not sure how to reproduce the problem, it happens every time I open my roll20 campaign.
I am using Chrome 21.0.1180.57 on a mac with Apple Mac OS X 10.6.8 Intel.
I attached a picture of what the tabs look like when the problem is occurring.
<img
src="http://community.roll20.net/uploads/FileUpload/8d/c1add8711adaa82b81be988b444955.tiff" />