Pretty annoying to happen constantly throughout the day as I swap projects a lot

I think I just figured out the cause. I think it happens every time the Creator Companion tries to check which editors are installed; I opened the settings in Creator Companion, and it did the same thing it did when opening VCC. Opening the settings causes Unity Hub to open every time and consistently. Very easy to replicate.

I have this problem too.

I'm experiencing the same issue myself.