While Alcove (notch-app) is running, playing a media source (e.g., video on YouTube) for the first time leads to Safari being launched. I spoke with the dev of Alcove, and he stated that it is an Orion bug. Furthermore, he stated "Orion communicates to Control Center that it is using Safari bundle ID."
Safari shouldn't launch when playing a media source, while running Alcove.
Latest non-RC build
Sequoia (15)