Additional features, settings, or issues not covered by specific Microsoft Teams categories
Does your org use Shifts?
in the teams app - click on the 3 dots under Files
find Shifts
my Teams' Status shows out of office because I have a remote day scheduled in shifts. Nothing represents this in my outlook calendar, no OOO, or etc.. The only place is teams that shows Available, out of office
Once I remove my status from Shifts - my status in teams updates.
someone on a business trip might explain this, someone is updating the user's status in Shifts.