581826 - Disabled OPTION in SELECT internally selected with keyboard

Status: NEW

(Core :: Layout: Form Controls, defect)

Description

[doum-ti-di-li-doom]

User-Agent:       Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 1.1.4322; .NET4.0C)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; fr; rv:1.9.2.7) Gecko/20100713 Firefox/3.6.7

Two options begin with the same letter (T)
The first one is disabled

While list has focus, pressing T will internally select the disabled option although the highlighted one stays the same
Confirm by pressing the up or down arrow

Reproducible: Always

Steps to Reproduce:
1. Open list
2. Press T
3. Optionnally, press the up arrow
Actual Results:  
Option from 1. stays selected, but internally Two is selected because pressing the up arrow then selects One

Expected Results:  
It should have selected Three

Pressing T a second time does not even select Three

Same result with list open (when you see all options) or closed (when you see the selected option)

Yes, Internet Explorer 8/9 have a very similar bug, Two becomes the selected option when the list is closed

Comment 1

[doum-ti-di-li-doom]

Wanted to say SeaMonkey 2.0.6 is also affected

Not sure whether to report right now, or let you handle that after it's fixed

Comment 2

[doum-ti-di-li-doom]

For "fun", I went looking for regressions

None. Reproducable from Firefox 1 to 4 on Windows
Also tried 3.6 on Centos

*changing some flags

Comment 3

[Nickolay_Ponomarev]

I can confirm this with Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5; rv:2.0b6pre) Gecko/20100901 Firefox/4.0b6pre. Bug 451200 is similar to this, but is not an exact duplicate.

Comment 4

[Nickolay_Ponomarev]

Attachment: testcase from the reporter