I have a question for someone who might know why this appears.
1) It only appears in the LR Develop module, no other programs on my system including Photoshop CS5 show this.
2) I run 2 monitors so I moved LR over to the second and the same thing happens, so its not monitor related.
3). Selecting the top arrow and then selecting it again makes this go away.
As anyone seen this before?