403630 - Divs with style position=fixed are rendered very slow if we switch off display='none' style.

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[S C]

User-Agent:       Mozilla/5.0 (compatible; Konqueror/3.5; Linux 2.6.18-4-amd64; X11; x86_64; en_US) KHTML/3.5.5 (like Gecko) (Debian package 4:3.5.5a.dfsg.1-8)
Build Identifier: Firefox 2.0.0.8 from Ubuntu 7.04

See provided URL. If we click "Richfaces.showModalPanel" link, new DIV ('modal panel') is shown after 3-4 seconds only.
As I see in Firebug profiler our JavaScript spends only about 20 ms. Firefox for Windows works fast and well with this example.
Details: http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4099379#4099379

Reproducible: Always

Steps to Reproduce:
1. Open URL http://livedemo.exadel.com/richfaces-demo/richfaces/modalPanel.jsf;jsessionid=DC5300EC9A4C34984FA041F094E3ED29?c=modalPanel
2. Click link "Richfaces.showModalPanel('mp',{width:450, top:200})" on this page.
3.  
Actual Results:  
It takes about 3-5 seconds until the dialog opens and 2-3 further seconds until the background is disabled.

Expected Results:  
It should take less then 1 second as in Windows version or in other browsers.

Comment 1

[Przem Jaskierski]

Confirming, this is reproducible in my case.

Comment 2

[Przem Jaskierski]

This is a killer bug for our rich client application. If not resolved we would have to enforce Opera/Krusader on our users :(.

Comment 3

[José Jeria]

Is this still an issue in Firefox 3?

Comment 4

[Hasan Ceylan]

Whle trying to isolate a bug I am experiencing with a page that has a div of which style fixed abd has a bacground renders slow when page is scrolled, I came accross with this bug.

Although I am not the original reporter of the bug, just to provide my 2 cents, I tried the page with firefox 3.0.1 on Fedora 9 with Gnome GTK2 build, I have no problem with the page rendering...

Hasan Ceylan

Comment 5

[Tyler Downer [He/Him]]

This bug was originally reported on Firefox 2.x or older, which is no longer supported and will not be receiving any more updates. I strongly suggest that you update to Firefox 3.6.6 or later, update your plugins (flash, adobe, etc.), and retest in a new profile. If you still see the issue with the updated Firefox, please post here. Otherwise, please close as RESOLVED > WORKSFORME
http://www.mozilla.com
http://support.mozilla.com/kb/Managing+profiles
http://support.mozilla.com/kb/Safe+mode

Comment 6

[Tyler Downer [He/Him]]

No reply, INCOMPLETE. Please retest with Firefox 3.6.8 or later and a new profile (http://support.mozilla.com/kb/Managing+profiles). If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.