Objectdock
I recently purchased ObjectDock and really like it. However, I've noticed that whenever I cold-start my PC and ObjectDock loads, there is a extra "blank" icon added to the dock (see below right).

When I click on the blank space above the caret the first time, it opens the Microsoft Store app. If I close that app and click on the blank icon again, it opens the Windows Setting screen. Then when I close that screen the blank icon remains, but clicking it does nothing. Sometimes it disappears on its own. This is not a big deal of course, but curious to know if this is a known bug, and if there is a way to prevent this from happening.