366217 - :hovered text jumps right if containers have certain CSS properties

Status: RESOLVED WORKSFORME

(Core :: Layout: Text and Fonts, defect)

Description

[Ian Moody [:Kwan] (UTC+1)]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.8.0.9) Gecko/20061206 Firefox/1.5.0.9
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a2pre) Gecko/20070106 Minefield/3.0a2pre

When containing elements have certain style properties :hovered text (in an a or span etc.) jumps to the right if it changes colour etc. and isn't at begining of line.  First discovered on provided URL using Gran Paradiso Alpha 1.  Created a testcase and tested against latest 1.9a2pre where it was still present.

Reproducible: Always

Steps to Reproduce:
1. An element containing text that changes appearance slightly (color/background-color/underline) on :hover and has text before it
2. 3 containing elements, outer one with a certain width, middle one with a certain % padding and inner one with overflow: auto
3. hover over the element
Actual Results:  
The text jumps a few pixels to the right, (also leaving some pixels behind, except at larger sizes)

Expected Results:  
The text doesn't jump

Also occurs in a XHTML version of the testcase

Comment 1

[Ian Moody [:Kwan] (UTC+1)]

Attachment: Simplified testcase

Comment 2

[Steve England [:stevee]]

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8.1.2pre) Gecko/2007010203 BonEcho/2.0.0.2pre
WFM

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a2pre) Gecko/20070107 Minefield/3.0a2pre ID:2007010704 [cairo]
I see this

Comment 3

[Mats Palmgren (inactive)]

WFM (gtk2), Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9a2pre) Gecko/20070107 SeaMonkey/1.5a

WFM (cairo-gtk2), Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9a2pre) Gecko/20070107 Minefield/3.0a2pre

Comment 4

[j.j.]

wfm
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a2pre) Gecko/20070107 Minefield/3.0a2pre

Comment 5

[Ian Moody [:Kwan] (UTC+1)]

Still present in Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a2pre) Gecko/2007012004 Minefield/3.0a2pre

Comment 6

[Ian Moody [:Kwan] (UTC+1)]

This was fixed in
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a2pre) Gecko/2007012304 Minefield/3.0a2pre