This sounds like a slightly different manifestation of this issue: Edit Layout/Report in Pro 11 Screen turns to gray when using either of the scroll bars.
The bug referred to in this link may be found in the Known Bug List here in the forum.
This list may also be downloaded as a filemaker database from: http://www.4shared.com/file/8orL8apk/FMP_Bugs.html
Thank you for your post and screen shots.
This is definitely the same manifestation that PhilModJunk mentions in the previous post (Thank you). I have attached your post to the original case sent to our Development and Software Quality Assurance (Testing) departments.
I am still having the same refresh issues after the graphic update from Apple.