Using the scroll bar to scroll up and down, a grey flicker appears at the top of the page when scrolling up, and at the bottom of the page when scrolling down. On slashdot.org the effect is blocky and more opaque, but is visible on all pages I have looked at

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Kev -- Perhaps this is a gfx bug or a view bug. Please look and reassign to Patrick if need be.

Flicker's on Linux. Does not flicker on WIN32. My guess is that it is a difference in the expose events that are generated from GTK as opposed to those on WIN32. The window is asked to scroll which generates an expose event for the regions of the window that has been uncovered. The repainting of the window should go to the background buffer so that you do not see the repainting of the exposed area until it is complete. Ramiro, could you take a look at this? I am marking it as [PP} and moving its severity down to minor.

Marking dup of 12860 *** This bug has been marked as a duplicate of 12860 ***

Agreed. Marking this as verified duplicate of 12860.