Window menus close as soon as they open

[Daniel van Vugt]

Window menus close as soon as they open, if you happen to be moving the mouse upward very slightly at the same time.

Test case:
1. Move the cursor slowly upward over a Nautilus window's titlebar, and right click on the titlebar at the same time.

Expected: Window menu opens and stays open.
Observed: Window menu opens, but immediately closes again.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome-shell 3.25.91-0ubuntu5
ProcVersionSignature: Ubuntu 4.12.0-13.14-generic 4.12.10
Uname: Linux 4.12.0-13-generic x86_64
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
Date: Fri Sep 15 14:53:40 2017
DisplayManager: gdm3
InstallationDate: Installed on 2017-05-03 (135 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170502)
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Whether or not this bug triggers an accidental minimize seems to depend on the style of the headerbar.

For gedit, the window is accidentally minimized as the bubble menu also appears too high (so the user is now unwittingly selecting Minimize). For Terminal however, the accidental minimize does not happen.

Maybe we need a separate bug for those bubble menus appearing too high, but it's very closely related to this one right now.

[Daniel van Vugt (vanvugt)]

OK, let's use bug 1725708 for the wrongly placed bubble menu.