302408 - Cell borders not scrolling along with tbody

Status: RESOLVED DUPLICATE of bug 135236

(Core :: Layout: Tables, defect)

Description

[Jan Moesen]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b4) Gecko/20050724 Firefox/1.0+
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b4) Gecko/20050724 Firefox/1.0+

The table in the URL contains a tbody consisting of the following lines:

<tr><td><pre>foo</pre></td><td><pre>bar</pre></td></tr>

The relevant CSS is:

	table
	{
		width: 100%;
		margin-bottom: 4ex;
		border: 1px solid #888;
		border-collapse: collapse;
	}
	th
	{
		text-align: left;
	}
	td
	{
		border-top: 1px solid #ccc;
	}
	table > tbody
	{
		height: 40ex;
		overflow: auto;
	}
	pre
	{
		display: inline;
		margin: 0;
		font: inherit;
	}

When scrolling the tbody, the borders don't scroll along with the table. They
stay put, as if they were a fixed background image. I'm guessing the "leakage"
of borders below the scrollbar is a related problem. If not, I'll file a new bug.

Reproducible: Always

Steps to Reproduce:
1. Open testcase (can take a while)
2. Scroll the table at the bottom of the page

Actual Results:  
Borders stay put

Expected Results:  
Borders should scroll along

Comment 1

[Bernd]

Did you search bugzilla before filing a new bug?, the original bug has nearly
the identical title

*** This bug has been marked as a duplicate of 135236 ***

Comment 2

[Jan Moesen]

I did search, yes. I used Jesse Ruderman's Bugzilla quicksearch [*] to search
for "ALL tbody". I overlooked bug 135236. Sorry.

[*] http://www.squarefree.com/bugzilla/quicksearch-help.html