People will often refresh/reload if their opponent isn't moving to make sure they haven't actually disconnected. That could be what you are seeing. Or it is possible they have a poor connection or you are having a problem that makes it look like they are disconnecting when your client actually is.
https://support.chess.com/customer/en/portal/articles/1444918-my-internet-connection-is-fine---why-am-i-getting-disconnects-
What is it when someone has a good connection (green bar) but they are constantly disconnecting and reconnecting?
I have seen this a lot lately.
Probably could be anything. I would assume forcing a refesh or a bouncing connection myself.
The connection indicator I think mainly measures latency and a connection that bounces could still be green as long as most of the time it is up the latency is low.
Guys (chess.com) the ios app is extremely frustrating to play on over the last two or 3 weeks... Unless I CM someone (or they me) long before the game is out of time (I normally play 3m) I get massive disconnect and reconnect issues resulting in game loss even from some strong positions and some where I'm one move from CM with over a minute vs their sub 20s and I get disconnected and lose!! Please attend to this ASAP as it is a recent problem which I have never experienced to this degree in all my 3 years+ playing the game.
it is disconnects, then when i come back after a lenghty time....and my opponent disconects numerous times. After the game chess.com restricts my play!! what gives?? i think there is a spam!!