Teams saying I am available when I am away

I’ve been told at work that my Microsoft teams status always says ‘available’ when I am not at my desk. This has landed me in trouble several times with my manager who says ‘I’ve asked you to stop setting your teams status manually to available when you are actually away!’ But I don’t do anything with my teams status

I reset my status a few times to see if that helped, but I’m still being told it often says available when I am offline? Has anyone else had this?

Weirdly for me, when I come back to my desk, I can see it’s gone orange and I wiggle my mouse and goes green but everyone else sees me as available the whole time?

My manager is losing trust with me over this