57511 - float:left, overflow:auto, window resize: flickering of wrong layout

Status: RESOLVED WORKSFORME

(Core :: Layout, defect, P3)

Description

[Hixie (not reading bugmail)]

STEPS TO REPRODUCE
   Make a float get pushed down due to lack of horizontal room. 
   Set that float to overflow:auto.
   Resize the window.

ACTUAL RESULTS
   The contents of the float flicker in the position that the float would have
   been placed in had there been room.

Tested with Windows 2000 commercial branch bits 2000102017.

Comment 1

[Hixie (not reading bugmail)]

This is visible on the Netscape intranet's CIA homepage. Notice that only as
much of the float as will be rendered in the viewport actually flickers. You
can see this by making your window shorter. Whether the content is long enough
to trigger a scrollbar or not does not affect this bug.

Comment 2

[Hixie (not reading bugmail)]

Attachment: Test case - resize the window and observe the area to the right of the first box that says "some random text".

Comment 3

[buster]

P3, Milestone -> Future

Comment 4

[Kevin McCluskey (gone)]

Build reassigning Buster's bugs to Marc.

Comment 5

[basic]

Is this an October only bug or something? ;-)

with build 2001102903 win32 I don't see any flickering

Comment 6

[Mats Palmgren (inactive)]

WFM, 2002-06-14-08 (trunk) on Windows 98 SE.

Comment 7

[Brian Rogers]

Bug 132337, which looks like a dup of this, has an interesting comment.  Someone
observed that the div is being reflowed to zero width, then immediately back. 
The same thing is happening in this testcase.  It's the second div that you see
drawn over the first when the first is scrolled, and reflowed to zero width for
a split second, leaving enough room for the second div to move up.

Another similar problem can be seen at
http://www.truffula.net/~burpmaster/smash/targets.xhtml
Reflowing to zero width explains what I see there, too.  The left edge gets
moved to the position of the right edge, and then the table rows flow outside of
the table body.

Bug 132337 was seen on both Win2k and Linux, so I'm sure this also occurs on all
platforms and OS's.

Comment 8

[Greg K.]

WorksForMe using FizzillaCFM/2002071208; no flickering is observed in the
testcase while window is resized from minimum to maximum width and back again.

Comment 9

[Brian Rogers]

Can't reproduce anymore, from either resizing or scrolling.
WORKSFORME.

Comment 10

[Brian Rogers]

Looks like bug 132337 has a testcase that still shows flickering, but I'll leave
this one resolved.