Summary: | Incomplete repaint of position:fixed elements that change size after scroll | ||||||||
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Product: | WebKit | Reporter: | Dylan <dylanryan> | ||||||
Component: | Layout and Rendering | Assignee: | Nobody <webkit-unassigned> | ||||||
Status: | RESOLVED INVALID | ||||||||
Severity: | Minor | CC: | mitz, robert | ||||||
Priority: | P4 | ||||||||
Version: | 528+ (Nightly build) | ||||||||
Hardware: | Mac | ||||||||
OS: | OS X 10.5 | ||||||||
Attachments: |
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Description
Dylan
2008-06-06 20:37:03 PDT
Created attachment 21543 [details]
Testcase/reduction
Steps to reproduce:
1) Scroll page down any amount (the more you scroll, the larger the area that is not properly repainted is, to a point. 2-3 lines is good, or all the way to the bottom)
2) Click the link to resize the positon:fixed div (clicking the link again restores it to its original size)
3) Notice the area that is not properly repainted (usually, a stripe along the bottom of where the full-sized div was is not cleared, though sometimes a stripe along the top or the entire large div remains visible)
Created attachment 25083 [details] Screenshot of fixed position element incorrect rendering after scroll From http://www.panic.com/coda/developer/ to reproduce: scroll down then scroll up again. (I used the mouse wheel on latest WebKit nightly build) (In reply to comment #2) In regards to the coda developer site the behaviour seems to occur inconsistently. The first time I navigate to the coda site scrolling down then up does not cause any problems ... however, if I navigate to another page from that page; then click back; the behaviour will then appear as seen in the above screenshot. (In reply to comment #3) > (In reply to comment #2) > > In regards to the coda developer site the behaviour seems to occur > inconsistently. The first time I navigate to the coda site scrolling down then > up does not cause any problems ... however, if I navigate to another page from > that page; then click back; the behaviour will then appear as seen in the above > screenshot. > I think that might be "Failing to reset "slow repaints"/"can blit" mode on the back navigation" which is bug 21256. I can no longer reproduce this. Please re-open if you think the bug is still valid. |