LXDE Forums

Hello and welcome to the forums.

tommyroland wrote: ↑Thu Jul 29, 2021 2:55 amNow all the other panels on the taskbar close when I click out of their window except for the volume control slider.

I have difficulty understanding this; the panel is the usually long, thin strip at the top or bottom of your desktop, containing a menu and various other buttons, and buttons for open windows, and a so-called system tray for other icons like volume control or network manager.
Usually there's only one such panel.

With that in mind:

tommyroland wrote: ↑Thu Jul 29, 2021 2:55 amHi, Is there a way to hide the panel when the focus changes to another window.

No, but you can set it to autohide (hit the screen edge with your mouse to show).