I am using Ubuntu 22.10. I do have Dash to Dock for Cosmic installed but I set the settings and then turn that extension off. That allows Ubuntu Dock to take over and keep the settings. With the applications button ticked to not show in the dock and with your extension on. It throws the applications button up in to the top left corner of the monitor. When I turn off your extension the effect goes away.
I am using Ubuntu 22.10. I do have Dash to Dock for Cosmic installed but I set the settings and then turn that extension off. That allows Ubuntu Dock to take over and keep the settings. With the applications button ticked to not show in the dock and with your extension on. It throws the applications button up in to the top left corner of the monitor. When I turn off your extension the effect goes away.