406577 - Page zoom unusable in Linux because of annoying screen effects

Status: RESOLVED DUPLICATE of bug 403565

(Core :: Layout, defect)

Description

[ourasi]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b2pre) Gecko/2007113013 Firefox/3.0b2pre (Swiftfox)
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b2pre) Gecko/2007113013 Firefox/3.0b2pre (Swiftfox)

When two sites have different zoom factors Firefox 3.0 beta/trunk first re-draws old page with very strange and irritating way before opening new site.

Reproducible: Always

Steps to Reproduce:
1. Meke new profile and set
security.warn_entering_secure;true
security.warn_leaving_secure;true
(only to stop loading in the middle to see better)

2. Open some site, ex. http://forums.mozillazine.org/viewforum.php?f=23

3. Zoom in couple if times

4. Open some https-site with no zoom or lesser zoom
ex. https://addons.mozilla.org/en-US/firefox/

Actual Results:  
When Firefox starts to load new sitem on can clearly see that it:
1. Draws a smaller frame to open windows
2. After OK fills that frame wit smaller text fro, old page
3. After that draws new page

Expected Results:  
Firefox should draw new page without those extremely irritating steps between pages.

Included are 3 pictures:

http://i20.photobucket.com/albums/b239/ourasi/Linux_zoom0.png
http://i20.photobucket.com/albums/b239/ourasi/Linux_zoom1.png
http://i20.photobucket.com/albums/b239/ourasi/Linux_zoom2.png

Maybe some thing happens in Windows also, but so fast that normally one can not see it (2 pictures):
http://i20.photobucket.com/albums/b239/ourasi/Win_zoom.png
Following happened only after I took screen shot
http://i20.photobucket.com/albums/b239/ourasi/Win_zoom2.png

Comment 1

[ourasi]

Some spelling corrections, sorry:
-------
Steps to Reproduce:
1. Make new profile and set
security.warn_entering_secure;true
security.warn_leaving_secure;true
(only to stop loading in the middle to see better)

2. Open some site, ex. http://forums.mozillazine.org/viewforum.php?f=23

3. Zoom in couple if times

4. Open some https-site with no zoom or lesser zoom
ex. https://addons.mozilla.org/en-US/firefox/

Actual Results:  
When Firefox starts to load new site on can clearly see that it:
1. Draws a smaller frame to open window
2. After OK fills that frame with smaller text from old page
3. After that draws new page

Expected Results:  
Firefox should draw new page without those extremely irritating steps between
pages 

Comment 2

[Ville Pohjanheimo (inactive)]

Confirming that this happens on recent trunk. For some reason, I'm only able to reproduce this behavior with a new profile.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b2pre) Gecko/2007120304 Minefield/3.0b2pre

Trying to focus product/component...

Comment 4

[Sylvain Pasche]

Sorry for bugspam, I messed up the dependencies.