How to quit Speedtest

I have the Speedtest app from Ookla on my MacBook Pro running Ventura 13.2.1. I have noticed that it does not launch if it is already running. However, it does not show if you try to Force Quit. Accordingly, I have to go to Activity Monitor and kill the process. I can then launch it, though it often disappears but keeps running until I kill it again in Activity Monitor. On my iPhone, the Speedtest app seems to be well-behaved, but it acts in this strange way on my Mac. Ah, I just found a place to quit it on its front window and that works. It also seem strange that it does not appear in the top bar and that its window disappears when moved. I'm guessing that it has not been updated for full compatibility with Ventura.