1478610 - [about:welcome] Visual glitch when resizing about:welcome page

Status: NEW

(Core :: Graphics, defect, P3)

Description

[Gabi Cheta [:Gabi] Release Desktop QA]

Attachment: resizeabout.gif

[Affected versions]:
- Nightly 63.0a1 (2018-07-26)
- Beta 62.0b11

[Affected Platforms]:
- Windows 10x64
- Windows 7x64



[Steps to reproduce]:
1. Open Fx and navigate to about:welcome
2. Place the mouse on the right lower corner in order to resize the browser
3. Drag to resize browser
4. Rezise browser a few times
5. Observe the left part of the screen next to "Take Firefox with you.." animation

[Expected results]:
No glitch should be observed when the Fx is resized

[Actual results]:
A glitch is seen on the left of the about:welcome page when browser is resized.


[Notes]: 
- Attached a gif of the issue

Comment 1

[Sam Foster [:sfoster] (he/him)]

I tried and failed to reproduce this with nightly on Windows 10 / x64. Will try another machine..

Comment 2

[Sam Foster [:sfoster] (he/him)]

I tried to reproduce on the Photon reference hardware (low-spec windows 10 laptop) with a new profile and I don't see the glitch shown in the reporter's gif. 

:Gabi can you check this again to see if it was fixed in the latest nightly? If its not fixed for you, could you attach the text from about:support?

Comment 3

[Gabi Cheta [:Gabi] Release Desktop QA]

(In reply to Sam Foster [:sfoster] from comment #2)
> I tried to reproduce on the Photon reference hardware (low-spec windows 10
> laptop) with a new profile and I don't see the glitch shown in the
> reporter's gif. 
> 
> :Gabi can you check this again to see if it was fixed in the latest nightly?
> If its not fixed for you, could you attach the text from about:support?

Issue seen on latest Nighlty 63.0a1 (20180730221422) on Windows 10x64.

Text raw data from about:support - https://pastebin.com/6E7agk4C.

Comment 4

[Sam Foster [:sfoster] (he/him)]

Attachment: about:support from :Gabi (reporter)

I'm adding this as an attachment in case the pastebin link breaks.

Comment 5

[Erica Wright [:ewright]]

I was unable to reproduce in a VM on mac, I'll try again once I'm back in office next Tuesday

Comment 6

[Erica Wright [:ewright]]

Nightly 63.0a1 (2018-08-10) (64-bit), Windows 10 Pro (1803).
I was unable to reproduce.