1968389 - Checkbox moves to the right when mouse hover

Status: NEW

(Toolkit :: Find Toolbar, defect, P3)

Description

[Alice0775 White]

Attachment: screenshot

Linux Mint 22 Cinnamon(X11) and ubuntu24.04(WayLand). However, I cannot reproduce the issue on kubuntu24.04(X11)

Steps to reproduce:

1. Open Findbar
2. Mouse hover checkbox of Whole Word etc.(except Highlight All)

Actual results:
The checkbox moves to the right about 1pcx.
It only happens with the first mouse hover after opening the findbar.
Screen capture: https://youtu.be/qXx648k3HJk

Comment 1

[Alice0775 White]

Attachment: about:support

Comment 2

[Alice0775 White]

Regression window:
https://hg-edge.mozilla.org/mozilla-central/pushloghtml?fromchange=e901b86e5d894b8b40093d72036208cf8837e098&tochange=8e959a7ded5f111e711c06a6728f76d3bd660699

Comment 3

[BugBot [:suhaib / :marco]]

:emilio, since you are the author of the regressor, bug 1867769, could you take a look? Also, could you set the severity field?

For more information, please visit BugBot documentation.

Comment 4

[Alice0775 White]

Another appearance change of the checkbox (i.e, thinner borderline),
https://hg-edge.mozilla.org/integration/autoland/pushloghtml?fromchange=32d761bfc411cb5ba4caac64e72195ab3bf22094&tochange=95af8fcb06d6d29902d341778e2d0b8c18130c6c

Unfortunately, Bug 1941755 does not fix this issue.

Comment 5

[Emilio Cobos Álvarez [:emilio]]

I couldn't reproduce this either unfortunately, and it doesn't seem worth digging too much into, it's probably a paint snapping issue... But nice find :)

Comment 6

[Alice0775 White]

And I can also reproduce the issue on Nightly140.0a1 Windows11.
Set display DPI Scale 100%, OR set layout.css.devPixelsPerPx=1.0 forcibly in about:config.

Comment 7

[Alice0775 White]

Attachment: about:support Windows11

Comment 8

[Alice0775 White]

Attachment: screenshot Windows11, DPI scale=100%

screenshot Windows11, DPI scale=100%
Red line is css outline for the checkbox.

It seems that the native themed checkbox does not render at correct position until mouse hover them.

Comment 9

[Alice0775 White]

KUbuntu24.04(x11): https://youtu.be/9JUhwEJcZ40
Ubuntu24.04(wayland): https://youtu.be/btolczD72K4