1410927 - Two horizontal and vertical scrollbars are displayed in "about:addons" page when resizing the browser

Status: NEW

(Firefox :: General, defect, P3)

Description

[Cristina Badescu [:cbadescu], Experiments QA]

Attachment: Scrollbars horizontal and vertical.gif

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0
Version: 58.0a1, Build ID: 20171022220103
 
Affected versions:
- Firefox 56.0 and above

Affected Platforms:
- All Windows
- All Mac
- All Linux

Prerequisites:
- Have latest Firefox release installed. 

Steps to reproduce:

1. Start the Firefox browser  and go to "about:addons" page, at "Get Add-ons" section.
2. Resize the browser and observe the horizontal and vertical scrollbar.

Expected results:
- One horizontal and vertical scrollbars are displayed.

Actual results
- Two horizontal and vertical scrollbars are displayed.

Notes:
- This issue is reproducible on all sections from "about:addons" page. Have at least 3 addons installed for "Extensions" section.
- This is reproducible also on older Nightly build, including Nightly 46.0a1 (2016-01-10)
- Attached is a screen recording with the issue.

Comment 1

[Xidorn Quan [:xidorn] UTC+10]

This feels like a frontend bug rather than layout bug, unless frontend guy can prove that their code is reasonable and there should be an additional scrollbar in a narrow size.

Comment 2

[Xidorn Quan [:xidorn] UTC+10]

s/should/shouldn't