Open Bug 1653919 Opened 4 years ago Updated 6 months ago

Glitches on the bottom of the browser when activating Title Bar

Categories

(Core :: Graphics, defect, P3)

Desktop
Windows
defect

Tracking

()

Tracking Status
firefox-esr68 --- wontfix
firefox-esr78 --- wontfix
firefox78 --- wontfix
firefox79 --- wontfix
firefox80 --- fix-optional

People

(Reporter: atrif, Unassigned)

Details

(Keywords: regression)

Attachments

(3 files)

Attached image tittle_bar_00.gif

Affected versions

  • 80.0a1 (20200719185002)
  • 79.0b9 (20200717001501)
  • 78.0.2 (20200708170202)

Affected platforms

  • Windows 10x64

Steps to reproduce

  1. Open Firefox Customize menu.
  2. Activate/Deactivate Title Bar and observe the bottom of the browser.

Expected result

  • No glitches presented.

Actual result

  • Bottom of the browser is mirrored shortly when activating Title Bar.

Regression range

Notes

  • Attached a screen recording.
    Severity S3
Has Regression Range: --- → yes
Has STR: --- → yes

Hi atrif,

On a machine where you can reproduce this, can you please post the about:support text?

Flags: needinfo?(alexandru.trif)
Attached file aboutsupport.txt

(In reply to Mike Conley (:mconley) (:⚙️) from comment #1)

Hi atrif,

On a machine where you can reproduce this, can you please post the about:support text?

Hi! Attaching contents of about:support. The issue is reproducing with WebRender off and on.
If more information is needed please let me know. Thanks!

Flags: needinfo?(alexandru.trif)

Hey jimb, just taking a shot in the dark here - does the GIF in comment 0 suggest to you that this is a problem in our graphics layer? Or is it more likely a problem in our widget layer? Or something else entirely?

Flags: needinfo?(jimb)

I guess a reasonable first step of debugging this would be to look at the frame tree behavior while that toggle is getting switched. If the frame tree gets updated precisely as the window gets reconfigured, then it'd be a downstream (i.e. graphics) problem. If there's a lag between the window reconfiguration and the frame tree update, then it'd be an upstream (i.e. widget) problem.

I think it would be reasonable for the graphics team to look into that, and kick it back to widget if it's an upstream issue.

Flags: needinfo?(jimb)

The severity field is not set for this bug.
:Gijs, could you have a look please?

For more information, please visit auto_nag documentation.

Flags: needinfo?(gijskruitbosch+bugs)

(In reply to Jim Blandy :jimb from comment #4)

I guess a reasonable first step of debugging this would be to look at the frame tree behavior while that toggle is getting switched. If the frame tree gets updated precisely as the window gets reconfigured, then it'd be a downstream (i.e. graphics) problem. If there's a lag between the window reconfiguration and the frame tree update, then it'd be an upstream (i.e. widget) problem.

I think it would be reasonable for the graphics team to look into that, and kick it back to widget if it's an upstream issue.

Punting this to gfx-land based on this comment.

Component: Toolbars and Customization → Graphics
Flags: needinfo?(gijskruitbosch+bugs)
Product: Firefox → Core
Severity: -- → S3
Priority: -- → P3

Can you still repro this bug?

Flags: needinfo?(atrif)
Attached image tittle_bar.gif

(In reply to Mayank Bansal from comment #7)

Can you still repro this bug?

I can still see some glitches on the bottom of the browser when activating/deactivating the title bar but I think it is more intermittent than then.

Flags: needinfo?(atrif)
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