Teams PHONE app - showing wrong / incorrect status

hi - thanks for the response. I have already considered all such scenarios like "what if this person just left the room", etc. Once someone leaves a room, their status would at least change from green to yellow after a few minutes, but it doesn't - it stays green. Once someone is not using their device (laptop, phone, whatever), because they are at lunch, or sleeping through the night, shouldn't their status change to yellow? But it doesn't - it stays green / red for hours, when they are obviously not even around their device. That cannot happen repeatedly, unless it's a "bug".  If this was an occasional thing I would not need to post to this forum. This is very frequent and consistent. 

Someone can on purpose set status to Yellow, and forget to change it back to green, but not the other way around. We cannot show "Green (available)" even when we haven't touched our device for hours (sometimes up to 12 hours).

Is anyone willing to at least consider the possibility that this may be a bug in the phone app?

thanks