Labels

When panel autohide is set to either intelligently or always

Issues related to when the background style

Running programs from the commandline/terminal

The menu that appears when right-clicking

When a custom dpi is set in the the font tab of Appearances dialog

Anything related to the desktop bus interface

Panel plugin that opens a menu which shows a directory's folder structure

Settings found on the Display tab of the Panel Preferences dialog

Issues related to holding down a mouse key while moving the mouse pointer

External Plugins specific issue

System tray icons that are set as hidden in properties and appear behind an overflow arrow in the panel

Issues related to icon presentation, scaling and similar

Related to shortcut keys and accelerators