262702 - No horizontal scrollbar when HTML width is greater than viewport width

Status: RESOLVED WORKSFORME

(Core :: Layout, defect)

Description

[Brandon L. Noard]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; rv:1.7.3) Gecko/20041001 Firefox/0.10.1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; rv:1.7.3) Gecko/20041001 Firefox/0.10.1

In the example page at http://www.waste.org/~jizo/regveg/index.html the page
displays fine at >800x600 resolution. When we shrink it any smaller, to
accomodate those still using smaller resolutions, the expected behavior is for
content to overflow and a horizontal scrollbar to appear. However, the scrollbar
is not displayed and the overflow content is lost.

Both the HTML and the CSS have been validated, and I have spent weeks to no
avail trying to figure out if there is something stupid in either of the above.
 Unfortunately, I - and a couple of others I've shown this to - can only
conclude this is a bug.

I have been able to reproduce this effect on any Mozilla/Firefox browser with
the newest engine (rv:1.7.3) on Windows 2000 and in Debian GNU/Linux. The
browsers with 1.6.x engines in the above mentioned OS's do not have this bug.

Reproducible: Always
Steps to Reproduce:
1. Open a browser using the 1.7.3 engine and navigate to
http://www.waste.org/~jizo/regveg/index.html
2. Shrink the browser down to <800x600 (the page is set to overlow horizontally
at 770px)


Actual Results:  
The page shrinks and overflows as expected.  However, the horizontal scrollbar
that should display does not.  I am left with content overflowing on the right
side of the page that I can't get to.

Expected Results:  
A horizontal scrollbar should have displayed, allowing me to scroll right.

Again, I've noticed it on any browser using the 1.7.3 engine on both a Windows
2000 and a Debian GNU/Linux OS.  I have not installed or used any extentions in
any of these browsers.

Comment 1

[Brandon L. Noard]

Attachment: Screenshot - notice the lack of horizontal scrollbar

Comment 2

[Fabio Russo]

Confirming with Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3)
Gecko/20041001 Firefox/0.10.1

but is similar to Bug #261184
also bug #192767 could be related

Comment 3

[Gary van der Merwe]

Attachment: Simplified Testcase

Seems as though the 
HTML
{
	min-width: 770px;
}
 is causing the problem

Comment 4

[Gary van der Merwe]

body
{
	min-width: 770px;
}
seems to work fine.

Changing summary from 
horizontal scrollbar does not display when there is a horizontal overflow
To 
No horizontal scrollbar when HTML min-width is greater than viewport width

Comment 5

[Boris Zbarsky [:bzbarsky]]

Attachment: Actually, setting "width" is enough

Comment 6

[Boris Zbarsky [:bzbarsky]]

Confirming.  roc, any idea what's up here?  The parent of the html's frame is
the canvas (which just stretches to be the size of the html's frame), then we
have the scrollframe, and then the viewportframe.  What really bugs me is that
setting width on the body does create the scrollbars.  I guess that's because
the scrollframe shows scrollbars if the thing inside it overflows, and the html
is not overflowing here?  Or what?

Comment 7

[Peter Kasting]

Not fixed in 1.5.0.x, but both testcases are WFM on trunk (Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9a1) Gecko/20060525 Firefox/3.0a1).