So I needed to pop out for just a minute, so I chose to go into Spectate. Well, usually when you are in spectate you don't spawn but that definitely did NOT happen. I spawned in gray and was able to be killed. It still showed me in spectate but it's like I was a third team. It wasn't just a one-time thing - as I spawned multiple times this way -- both in CT and T side.
As I write this, I recall witnessing the same thing the other day too, but I honestly thought it was the player's issue.
Today, it happened to me first-hand.
Something to look into?