1484877 - [Xfce][CSD] Context menu and autoscroll position incorrect in un-maximized window with title bar disabled on Xfce

Status: UNCONFIRMED

(Core :: Widget: Gtk, defect, P5)

Description

[alanaktion]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0
Build ID: 20180808222917

Steps to reproduce:

On Xfce (tested on 4.12.5), open an un-maximized window with the Title Bar disabled.

This causes context menus and the autoscroll starting position to be to the top-left of the pointer. In the case of the context menu, this results in a single right-click triggering the Back button in the menu, instead of just opening the menu.

If the window is maximized and un-maximized again, the positioning will be corrected for that window, unless the "Title Bar" option in Customize is toggled, which reintroduces the incorrect behavior in that window. Maximized windows do not seem to be affected, and it doesn't appear to affect my non-Linux systems, or my systems running Gnome or Cinnamon. I can also reproduce the issue on the current Nightly build.


Actual results:

Context menus and the autoscroll are positioned incorrectly. Both act as though the pointer is slightly top-left of its actual position.


Expected results:

The context menu should show the top-left point at the pointer's position, and the autoscroll point should be centered on the pointer.

Comment 1

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1552613