1875996 - [wayland] Context menu for top edge of titlebar is too small and scrolls when window is at top of screen

Status: ASSIGNED

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

Description

[Julien Falque]

Attachment: Screenshot of the folded menu

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:121.0) Gecko/20100101 Firefox/121.0

Steps to reproduce:

On a Gnome desktop (Arch Linux, Wayland), I have a tiled Firefox window on the left half of the screen and I make a right-click on the very top pixel of the titlebar of the window, so at the top edge of the screen. It doesn't matter whether there is a tab at that position.

Actual results:

The context menu is slightly folded, hiding the last item behind a down arrow. Actually, the menu appears unfolded for a very short but still noticeable time, and then gets folded.

Expected results:

The context menu should always appear unfolded as there's enough room to display the menu entirely.

Comment 1

[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 2

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

Please attach your about:support page.

Can you please run Firefox on terminal as:

MOZ_LOG="WidgetPopup:5" firefox > run.txt 2>&1

reproduce it and attach the log here?
Thanks.

Comment 3

[Julien Falque]

Attachment: about:support.txt

Comment 4

[Julien Falque]

Attachment: run.txt

Comment 5

[Kestrel]

This occurs on Ubuntu 23.10 (Wayland) when the CSD titlebar is against the top bar. It does not happen with XWayland.

The first right-click on the top edge of a new window shows a context menu with 4 visible items, subsequent clicks show 7 visible items (menu contains a total of 8 items). In the latter case, the menu scroll distance is only 2px. The popup is positioned vertically 2px closer to the cursor after the regression.

Regression window:
https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=08eb1047d841ce4f1fcee1595dc4ec7ed8cba8f5&tochange=28da4138ddff87ff0684b274db911cd4b602ac92

Possibly regressed by Bug 1738265.

Comment 6

[Kestrel]

Attachment: Right-clicking on the topmost titlebar pixel producing a constrained context menu

Comment 7

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

:emilio, since you are the author of the regressor, bug 1738265, could you take a look? Also, could you set the severity field?

For more information, please visit BugBot documentation.

Comment 8

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1875996 - Make sure final anchor position doesn't go out of the window. r=stransky

Otherwise we get a smaller final rect from move-to-rect.

Comment 9

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

Set release status flags based on info from the regressing bug 1738265