1764890 - A scrollbar is displayed for a few seconds on the bottom-right part of the “about:welcome” page while a refresh action is performed

Status: VERIFIED FIXED

(Firefox :: Messaging System, defect, P1)

Description

[Simona Rosu [:srosu], Ecosystem QA]

Attachment: scrollbar_refresh.gif

[Affected versions]:

• Firefox Nightly 101.0a1 (Build ID: 20220414214512)
• Firefox Beta 100.0b6 (Build ID: 20220414190112)

[Affected Platforms]:

• Windows 10 x64
• macOS 11.6
• Ubuntu 20.04 x64

[Prerequisites]:

• Have the latest Firefox Beta 100 browser installed/extracted.
• Have a new Firefox profile.

[Steps to reproduce]:

1. Open the Firefox browser with the profile from prerequisites.
2. Refresh the “about:welcome” page and observe the bottom-right part of the page.

[Expected result]:

• The page is refreshed and all the elements are correctly displayed.

[Actual result]:

• An extra scrollbar is present.

[Regression Window]:

• The issue is not reproducible on the older Nightly 100.0a1 build. Considering this using mozregression tools I have found the regression range. Here are the results:

Last good revision: 660bc4607826fa9c262c73b424eeb6f9361ba2d5
First bad revision: 6c7a66cae86bc995159261e5f77e83450df8d3cf
Pushlog: link

@Greg could you please take a look over this regression window since I am not sure which bug has caused this issue?

[Notes]:

• Attached is a screen recording of the issue.

Comment 1

[Ed Lee :Mardak]

Bug 1762297 https://hg.mozilla.org/mozilla-central/rev/e83e356f4adc changed the css for buttons including the 'not now' on the first screen.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1762297

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

:gregtatum, since you are the author of the regressor, bug 1762297, could you take a look?
For more information, please visit auto_nag documentation.

Comment 4

[Ed Lee :Mardak]

We'll triage this

Comment 5

[Punam Dahiya [:pdahiya]]

probably not an uplift candidate , will be nice to fix in Fx101 and ride the train

Comment 6

[Meg Viar [:mviar]]

Attachment: Bug 1764890 - A scrollbar is displayed for a few seconds on the bottom-right part of the “about:welcome” page while a refresh action is performed

Comment 7

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/79636a13f95e
A scrollbar is displayed for a few seconds on the bottom-right part of the “about:welcome” page while a refresh action is performed r=emcminn

Comment 8

[Cristian Tuns]

https://hg.mozilla.org/mozilla-central/rev/79636a13f95e

Comment 9

[Marius Coman [:mcoman], Ecosystem QA]

I have verified that this issue is no longer reproducible with the latest Firefox Nightly (101.0a1 Build ID - 20220421094346) installed on Windows 10 x64, macOS 10.15.7, and Linux Mint 20.2 x64. Now I can confirm that the scrollbar is no longer displayed after page refresh.