341653 - CSS-based image-list ("gallery") frequently rendered differently on repeated reload

Status: RESOLVED WORKSFORME

(Core :: Layout: Block and Inline, defect)

Description

[Franz]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; de-DE; rv:1.7.12) Gecko/20050920 Firefox/1.0.7
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; de-DE; rv:1.7.12) Gecko/20050920 Firefox/1.0.7

A CSS- and unordered-list-based gallery is rendered differenty when it
is repeatedly reloaded.

Affected are Linux Versions 1.0.8 and 1.5.0.4 of FF.
(Opera 8.02 show frequently errors, but Konqueror 3.4.0 works OK).

cf. screenshots.

Reproducible: Always

Steps to Reproduce:
1. place files on web-server (not on local HD)
2. open URL in FF
3. search rendered page by scrolling thru
4. reload by pressin Shift-Ctrl-R and Ctrl-R
5. repeat 3.

Actual Results:  
There a three different types of errors:
1. When reloading the page with Shift-Ctrl-R none or only few images
   are rendered (case1.jpg)
2. When reloading the page with Shift-R all or only few images
   are not rendered
3. The results vary from reload to reload.

Expected Results:  
1. FF shall produce the same output every time the same input
   is rendered and FF's "initial state" is the same.
   FF shall not have different "initial state" after loading
   the same source multiply.
2. FF shall render the page correctly.


I found the CSS-gallery on
http://www.brunildo.org/test/ImgThumbIBL2b.html
where I could NOT find any rendering quirks.

Comment 1

[Franz]

Attachment: Expected result

Comment 2

[Franz]

Attachment: One div-element is rendered wron after SHIFT-R

Comment 3

[Franz]

Attachment: Every div seems to be rendered incorrecty, but ...

Comment 4

[Franz]

Attachment: ... if you scroll down, you'll find one that's OK

Comment 5

[Franz]

Attachment: SOURCE: place this on webserver

Comment 6

[Franz]

Attachment: SOURCE: place this preview image on webserver

Comment 7

[Franz]

Attachment: SOURCE: place this background image on webserver

Comment 8

[Franz]

FF 3.0.15 and FF 3.5.5 work OK

Comment 9

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

Thanks for letting us know that it's fixed.

When we don't know what fixed the problem, we use the WORKSFORME resolution rather than FIXED, though.