222327 - All tabs start to have vertical "jitter" when loading a page in a new tab

Status: RESOLVED DUPLICATE of bug 219643

(SeaMonkey :: Tabbed Browser, defect)

Description

[din-mozilla]

User-Agent:       Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:1.5) Gecko/20031007
Build Identifier: Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:1.5) Gecko/20031007

(This happens on several[/all] sites when I switch to "tab" mode.  I'm using
Steve's Digicam page just as a concrete example.)

Short version: I right clicked on a link, selected open in new tab, and both
tabs started to experience veritical jitter. 

Long version:
o Opened www.steves-digicams.com/diginews.html.  No problem.
o Right clicked on the Kodak 6490 review, and selected "Open in new tab".  Tab
was created, page was loaded and was jittery - it had veritcal jitter.
o Selected the original (diginews.html) page - it was jittery.
o Closed the Kodak 6490 review tab - the diginews.html page was still jittery.
o Closed the browser
o Opened the browser (to my default - blank page).
o The blank page was jittery - noticable by the white page extending into the
scroll bar, then disappearing, then reapparing, etc.
o Loading a page caused the jittering to stop.

Reproducible: Always

Steps to Reproduce:
1. Opened www.steves-digicams.com/diginews.html.  No problem.
2. Right clicked on the Kodak 6490 review, and selected "Open in new tab".  Tab
was created, page was loaded and was jittery - it had veritcal jitter.

(additional steps taken)
3. Selected the original (diginews.html) page - it was jittery.
4. Closed the Kodak 6490 review tab - the diginews.html page was still jittery.
5. Closed the browser
6. Opened the browser (to my default - blank page).
7. The blank page was jittery - noticable by the white page extending into the
scroll bar, then disappearing, then reapparing, etc.
8. Loading a page caused the jittering to stop.
Actual Results:  
Tabs contents were jittery.

Expected Results:  
A smooth display.

Comment 1

[din-mozilla]

Once I close the new tab, the original page still jitters.  HOWEVER, if I then
go to another website (www.cnn.com), the jittering stops.  If I then select the
BACK button, the jittering returns.  I.e., once a page is flag to jitter - it
will keep jittering!

Comment 2

[Hermann Schwab]

Is your Personal Toolbar empty?
Bug 219643 Window shakes if empty Personal toolbar is expanded.

Comment 3

[din-mozilla]

If I understand what the "Personal Toolbar" -is- (the third toolbar, underneath
the back/forward/reload toolbar), then yes - it is empty.

I checked, and if I go from "unhide" to "hide" to "unhide" (as indicated in bug
219643), I get the same sort of jitter as I am reporting.

If I set my browser to "hide" the toolbar, I am -unable- to reproduce my problem.

(Sorry, I scanned for "jitter" and not "shake" before I filed the bug report.)

Comment 4

[Boris Zbarsky [:bzbarsky]]

*** This bug has been marked as a duplicate of 219643 ***

Comment 5

[Nik]

The window for the web page when jittering extends down about 1-2 pixels along
with the vertical scroll bar, then pops back up.  This happens continuously 2-4
times a second.