Bug 1490571 Comment 20 Edit History

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Original comment by
on 
(In reply to Brad Werth [:bradwerth] from comment #18)
> mozregression identified Bug 1413546 as the source of the regression. Miko, would you please consider how retained display lists my cause this issue?

I can think of two possible reasons:
1) Lack of frame invalidation after resizing
2) Invalid hit test information (bug 1534549)
3) APZ problem

I looked into this briefly and after trying a workaround for 2), I think the cause is 1) or 3).
This might also be a FrameLayerBuilder bug, since I only managed to reproduce this with WebRender disabled.
Revision 1 by
on 
(In reply to Brad Werth [:bradwerth] from comment #18)
> mozregression identified Bug 1413546 as the source of the regression. Miko, would you please consider how retained display lists my cause this issue?

I can think of three possible reasons:
1) Lack of frame invalidation after resizing
2) Invalid hit test information (bug 1534549)
3) APZ problem

I looked into this briefly and after trying a workaround for 2), I think the cause is 1) or 3).
This might also be a FrameLayerBuilder bug, since I only managed to reproduce this with WebRender disabled.

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