Seen as AFK on the official site and poe.trade

I noticed that I keep being seen as AFK while i'm playing the game.

For example, I attached a screenshot where I listed an item 1minute ago, and i'm afk. how is that possible?

https://imgur.com/a/pNy2ORc



Possible problem : I'm currently at work and the ports are closed. So i can't actually play the game( a loading screen will DC me), I'm just staying in Hideout and trading.
BUT, did does not happen everytime.