Firefox's Windows taskbar icon's blue highlight flickers when scrolling a select drop-down list

NEW
Unassigned

Status

()

Core
Widget: Win32
P2
normal
9 months ago
8 months ago

People

(Reporter: cpeterson, Unassigned)

Tracking

51 Branch
Unspecified
Windows 10
Points:
---

Firefox Tracking Flags

(firefox55 wontfix, firefox56 wontfix, firefox57 wontfix, firefox58 affected)

Details

(Reporter)

Description

9 months ago
STR:
1. On Windows, click on this bug's "Product" select drop down list.
2. Hover the mouse pointer over one of the list entries so the entry is highlighted.
3. Slowly scroll the list. (I am scrolling with a laptop trackpad gesture.)

RESULT:
Firefox's Windows taskbar icon's blue highlight flickers when scrolling the select drop-down list.

I don't think this is a (recent) regression because I can reproduce in both Firefox 55 and Nightly 57. I am running Windows 10 Insider Preview, so maybe this is a Windows OS regression?

Comment 1

8 months ago
Sounds like you've managed to reproduce bug 1399126?
Flags: needinfo?(cpeterson)
(Reporter)

Comment 2

8 months ago
(In reply to Jim Mathies [:jimm] from comment #1)
> Sounds like you've managed to reproduce bug 1399126?

That sounds like a different problem. I don't see high CPU usage when scrolling Bugzilla's "Product" select drop down list.

I'm still able to reproduce this flickering taskbar icon in Nightly 58. It almost looks like a progress bar "filling up" the taskbar icon from bottom to top.
status-firefox58: --- → affected
Flags: needinfo?(cpeterson)

Comment 3

8 months ago
Do you think this has something to do with running insider preview? We're trying to reproduce here but not having any luck.
Flags: needinfo?(cpeterson)
(Reporter)

Comment 4

8 months ago
(In reply to Jim Mathies [:jimm] from comment #3)
> Do you think this has something to do with running insider preview? We're
> trying to reproduce here but not having any luck.

I would not be surprised if this is a graphics issue with Windows Insider Preview on my laptop, but I have no way to test a non-Insider Preview version on this laptop. I can't repro this issue in Chrome or Edge on the same machine.
status-firefox55: affected → wontfix
status-firefox56: affected → wontfix
status-firefox57: affected → wontfix
Flags: needinfo?(cpeterson)

Updated

8 months ago
Priority: -- → P2
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