What are these buttons on the edge of my Pixel 5 / Android 13 screen and how do I remove them?

There is a button menu on the edge of my stock Pixel 5 / Android 13 screen that do nothing and are constantly in the way, but I can't figure out how to make it go away. Probably the same problem that is preventing them from launching an app is also preventing configuration. I don't know what these buttons are called, so I haven't been able to search the web for a solution. So here is a screenshot. The buttons are on the center-right edge of the screen: The buttons are the icons of apps I have installed. They show up not just on the home screen, but on every screen of every app. I can move the position of this menu around the screen by dragging it, but it is otherwise inert. Is this an add-on app that you recognize, that I might uninstall to make these go away? Thanks!