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Are you using Windows XP (still) by any chance?
WE've had exactly this (well it sounds like it) flashing black screen when over various panels.
It turns out to be graphics card related with XP - to fix it we turned down the Graphic Hardware Acceleration - we found two notches down from the lowest worked fine.
Credit here to Martin on our internal help desk, who had seem similar issues with other applications.
Not an issue with Windows 7 (afaik)
ACM
Are you using Windows XP (still) by any chance?
WE've had exactly this (well it sounds like it) flashing black screen when over various panels.
It turns out to be graphics card related with XP - to fix it we turned down the Graphic Hardware Acceleration - we found two notches down from the lowest worked fine.
Credit here to Martin on our internal help desk, who had seem similar issues with other applications.
Not an issue with Windows 7 (afaik)
ACM
I was able to solve the problem by setting navigationMode:'classic' (and NOT using 'css-transforms')
when creating the map (map = new Map...).
Before doing this the problem was very bad - not just flickering, but 80% of the page randomly blanked out to the
page background color.
Now works fine and I don't notice a difference in pan-zoom behavior when 'classic' is used.
Work fine on on Safari (at least v5.1.7).