I use Firefox 32 and Windowblind 8 without problems. However, recently, when I upgraded to Firefox 35, the top of Firefox Windowblind was not there. I moved back to Firefox versions 34 and 33, still the same. Then back to 32, and Windowblind 8 works fine. No problem with Windowblind 8 on other applications. I run Windows 7 Professional with all updates.
Any thoughts?