1622546 - Scrollbar shows artifacts on high DPI monitors

Status: UNCONFIRMED

(Core :: Widget: Win32, defect, P3)

Description

[quadronom]

Attachment: scrollbar-artifact.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:74.0) Gecko/20100101 Firefox/74.0

Steps to reproduce:

The scrollbars will randomly show artifacts (see attached img) on high resolution monitors [display is 3840 × 2160 px with a Windows scale factor of 150%]. This was not present before v74 for me.
The behaviour can't be forced – it just randomly appears and disappears.

Comment 1

[Jeronimo Torti (Please send NI request to Brindusa Tot)]

Hi,
since we don't have high resolution monitors, we are unable to reproduce this issue. I'll add product and component so the team can make some research on it. Hopefully, someone with resources needed can help.

Regards,
Jerónimo.

Comment 2

[Jim Mathies [:jimm]]

Would you please post your about:support text? Thanks!

Possible dupe -
Bug 1625185 - Sometimes there's a line between the scrollbar and content

Comment 3

[quadronom]

Hey Jim, I will do so. Does it matter I am without the second display right now?

Comment 4

[Firefox Bug Husbandry Bot]

Because this bug's Severity has not been changed from the default since it was filed, and it's Priority is -- (Backlog,) indicating it has has not been previously triaged, the bug's Severity is being updated to -- (default, untriaged.)

Comment 5

[Firefox Bug Husbandry Bot]

Because this bug's Severity has not been changed from the default since it was filed, and it's Priority is -- (Backlog,) indicating it has has not been previously triaged, the bug's Severity is being updated to -- (default, untriaged.)

Comment 6

[Firefox Bug Husbandry Bot]

Because this bug's Severity has not been changed from the default since it was filed, and it's Priority is -- (Backlog,) indicating it has has not been previously triaged, the bug's Severity is being updated to -- (default, untriaged.)

Comment 7

[Firefox Bug Husbandry Bot]

The severity of these bugs was changed, mistakenly, from normal to S3.

Because these bugs have a priority of --, indicating that they have not been previously triaged, these bugs should be changed to Severity of --.

Comment 8

[quadronom]

Attachment: about support content

Comment 9

[quadronom]

Hey Jim, I've attached the about:support content here. Might it be a help!
(This bug is still present btw. And yes, Bug 1625185 seems like a dupe – I have the same symptoms here. Sometimes there is even a small border around the whole viewport! Happens fairly often with Google, where a dark blue border would show up.)

Comment 10

[Stephen A Pohl [:spohl]]

This should now only be an issue when non-native theming is manually disabled.