34944 - Expanding window fast dosn't scroll viewport into position

Status: VERIFIED DUPLICATE of bug 30548

(Core :: XUL, defect, P3)

Description

[Jonas Sicking (:sicking) No longer reading bugmail consistently]

Steps to reproduce:

1. Go to http://www.mozilla.org/images/mozilla-banner.gif
2. Decrease the width of the window until you get a horizontal scrollbar
3. Scroll to the right of the page
4. Increase the width of the window FAST until the scrollbar disappears

Actual resaults:
The scrollbar dissapears but the page is still scrolled to the right. Leaving
the leftmost part of the page scrolled out of the viewport.

Expected resaults:
When the page is wide enouth to fit the page and the scrollbar dissapears the
page should scrolled so that the entiere page is visible.

This can sometimes be hard to reproduce. Try a few times and remember to expand
the window FAST. It's easier with a slow computer.

Once you succeed with this you can try decreasing the window width until the
scrollbar appears. Then the viewport will jump into position.


The problem seems to be that mozilla only checks if the page is scrolld too far
to the right only when there is a scrollbar visible. The check also has to be
made once the scrollbar is removed (or rather, when the scrollbar is removed the
page can be set to be scrolled compleately to the left).

Tested on Win98SE with build 2000-04-06-10

Comment 1

[John Morrison]

Thanks for the excellent bug report. (Uh, I almost hate to do this, but 
this is bug #30548 -- marking DUPL). 

*** This bug has been marked as a duplicate of 30548 ***

Comment 2

[Sebastian Späth]

VERIFY duplicate