1881086 - [wayland][sway] fractional scaling - menus are often unusable

Status: UNCONFIRMED

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

Description

[Cole Mickens]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:124.0) Gecko/20100101 Firefox/124.0

Steps to reproduce:

1. Use Firefox Nightly (20240217214641)
2. Activate fractional scaling support (about:config -> widget.wayland.fractional-scale.enabled)
3. (maybe) change output scale in Sway to a non-integer value (I tend to use 1.5, 1.7 but I change +/- .1 increments as I go through my day)

Actual results:

As of the last few weeks (maybe corresponding to me activating fractional scaling), the GTK context menus are often broken to the point of unusable.

Non-native extension menus seem fine. For example, sideberry is always able to draw its context menus.

Expected results:

Everything keeps working as normal.

see attached

Comment 1

[Cole Mickens]

Attachment: example1

Comment 2

[Cole Mickens]

Attachment: example2

Comment 3

[Cole Mickens]

Uploaded a couple examples. Sometimes the screen flickers and there is nothing or almost nothing drawn at all.

Thank you, lovely Wayland folks.

Comment 4

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Gtk' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 5

[Martin Stránský [:stransky] (ni? me)]

Can you try nested mutter compositor?
https://fedoraproject.org/wiki/How_to_debug_Firefox_problems#Testing_different_Wayland_compositor
Thanks!

Comment 6

[[object Object]]

Can reproduce on KDE

Comment 7

[Kim Lindberger [:talyz]]

Getting the same issue on Gnome 45.3.

Comment 8

[Jay Tuckey]

Attachment: 2024-03-07 Firefox 124b8 on KDE 6.0.0 with fractional scaling enabled.txt

Same issue on KDE Plasma 6.0.0 with fractional scaling turned on.