221858 - floating elements blink while loading

Status: VERIFIED DUPLICATE of bug 132337

(Core :: Layout: Floats, defect)

Description

[Marek Stępień [:marcoos, inactive]]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6a) Gecko/20030923
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6a) Gecko/20030923

If a page contains a lot of floating elements (e.g. 100), the first one is
overlayed with a copy of another floating element while the page is loading, and
it blinks (the original and the overlayed).

After the page is loaded, it's ok.



Reproducible: Always

Steps to Reproduce:
1. Go to a page with many floats, e.g. http://www.exponet.pl/duzyplik.html


Actual Results:  
While loading you can see the "1. multiagd.pl (45)" (top-left box) being
replaced every 0.1 seconds with a copy of "6. eltelhurt.com.pl (27)" box, which
causes blinking. So you are unable to read the content of the float #1 until the
whole page is loaded.

Expected Results:  
Don't put a blinking copy of other floating divs over the first one.
Display the page (while loading) like Opera and IE do.



The blinking also probably causes a performance loss.

Affected UAs:

Mozilla/5.0 (X11; U; Linux i686; pl-PL; rv:1.4) Gecko/20030624
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6a) Gecko/20030923
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6a) Gecko/20031006 
and Netscape 7.1 on Linux and Windows.

Comment 1

[Marek Stępień [:marcoos, inactive]]

The performance loss: when page loaded from a local directory, it takes at least
seven seconds (Moz 1.4 on Linux, I have reports from Windows users that it can
take even longer) to display the page completely.

Thus, adding "perf" keyword.

Comment 2

[José Jeria]

Dupe of bug 132337? This seems to happend when an element is floated and has
overflow auto or an iframe with scrollbars.

Comment 3

[José Jeria]

Duping, please reopen if you disagree.

*** This bug has been marked as a duplicate of 132337 ***