958455 - [UX] Visibility indicator in the tab list drop down can be confused with a scroll bar

Status: NEW

(Firefox :: Theme, defect)

Description

[svbabukumar]

Attachment: TabList_Scrollbar.jpg

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.72 Safari/537.36

Steps to reproduce:

Step 1: Open the fire fox
Step 2: Click on the "+" or "Ctrl + T" more than 40 times 
Step 3: Click on the drop down button available next to the tabs to see the list of tabs opened



Actual results:

In the tabs list drop down scroll bars appears but doesn't works. the drop down falls on the windows task pane


Expected results:

The available scroll bar in the tab list drop down should work properly and the tab list drop down should not fall on the windows task pane


Note: Please find attached  the screen shot

Live build 26 - Win 7 64 bit- Reproducible
B 27 - Beta 5 -Win 7 64 bit- Reproducible
Aurora 28 Win 7 64 Bit- Reproducible
B 27 - Beta 5 -Ubuntu 13.10 32 bit - Reproducible
Nightly - Win 7 64 bit - Reproducible

Comment 1

[Andrei Vaida [:avaida]]

I was able to reproduce this issue on Mac OS X 10.9, Windows 7 64-bit and Ubuntu 13.04 32-bit, using:
- latest Nightly (Build ID: 20140113030203)
- latest Aurora (Build ID: 20140112004002)
- latest Beta (Build ID: 20140109165205)
- Firefox 26.0 (Build ID: 20131205075310)

Comment 2

[Dão Gottwald [:dao]]

This isn't a scroll bar.

Comment 3

[Dão Gottwald [:dao]]

uiwanted, because it's not clear what this indicator should look like instead.