Strange my fantasy app hasn’t said anything about this

That’s just poor common courtesy by your coworker. If you have a physical room booked and they are WFH they need to tell you so you don’t waste your time. You shouldn’t be relying on teams status

Ahhh the gigantic benefit of seeing a cubicle in the background of your zoom. Thanks Microsoft

Wouldn’t your coworkers already know you’re working from home by, you know not seeing you at the office?

System76?