424585 - When tbody overflow is scrollable and borders are collapsed: borders remain fixed and don't scroll; borders and cell background flow out of table

Status: RESOLVED DUPLICATE of bug 135236

(Core :: Layout: Tables, defect)

Description

[Michael Fayez]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/525.13 (KHTML, like Gecko) Version/3.1 Safari/525.13
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9b5pre) Gecko/2008032204 Minefield/3.0b5pre

apply style overflow-y: auto and setting height to fixed value the rules lines doesnt scroll with table cells and rule lines flow out of the table to the original height of the table without height attribute set to the tbody element



Reproducible: Always

Steps to Reproduce:
1.prepare table with tbody, thead and tfoot elements and set rules to any value other than none
2. apply style to tbody overflow-y:scroll;height 30px; 
3. add rows in the tbody elements enough to make tbody scroll
Actual Results:  
rules lines are fixed on the page and dont scroll when scrolling tbody rules flow out of table to the original height of the table without height attribute set to the tbody element

Expected Results:  
rules lines scroll when tbody scrolls
rules dont flow out of table

Comment 1

[Michael Fayez]

Attachment: the file demonstrates the bug of rules

Comment 2

[Michael Fayez]

this is an old bug that affects Firefox 2

Comment 3

[Lucas Malor (mail: c6kfnkn2uc AT snkmail DOT c0m)]

Attachment: Minimal Testcase - from testcase #1

Confirmed. I created a minimal testcase. I report here what I written also in the testcase:

Table borders remain fixed even when the scrollbar is moved, and borders continue to be drawn even after the table is finished under it, as reported.

This happens when table has border-collapse: collapse, and tbody has overflow-y: auto and a fixed height. This bug happens also if table has not border-collapse: collapse, but has rules="all" attribute. The bug does not happens if there's no tbody element, as reported.

Comment 4

[Lucas Malor (mail: c6kfnkn2uc AT snkmail DOT c0m)]

Confirmed on trunk and on Fx2, WinXP. Need to be confirmed on Linux and Mac.

Comment 5

[Lucas Malor (mail: c6kfnkn2uc AT snkmail DOT c0m)]

Attachment: Minimal Testcase #2: cell bacground

New problems found from Bug 440080. Also the background flow out the page, and has other strange behaviours. A better description is inside the testcase.

Comment 6

[Boris Zbarsky [:bzbarsky]]

What happened to searching for duplicates before confirming?