Audio mixer opens unintentionally on mouse-up
## Submitted by DarkTrick
Assigned to **Xfce Bug Triage**
**[Link to original bug (#16001)](https://bugzilla.xfce.org/show_bug.cgi?id=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
issue