Audio mixer opens unintentionally on mouse-up

Submitted by DarkTrick

Assigned to Xfce Bug Triage

Link to original bug (#16001)

Description

Reproduce the problem:

1. Create a new panel on the bottom of the screen.
2. Add Pulse audio plugin.
3. Panel properties -> Display -> Horizontal
4. close panel properties.
5. Left click (and hold) on newly created audio plugin inside panel
6. < audio plugin menu opens >
7. < Menu will overlay the panel item. It is shown directly under the cursor >
8. stop holding mouse button
9. Menu item will be clicked (in my case audio mixer opens)

Possible bugfix:

• Make the audiomixer menu appear above the panel (as all the other menus from the panel).

Version: 4.13.4