Check if server YDoc has applied update from client

We’re observing an instance where a client is able to make edits to a YDoc but the server never sees those updates applied despite the y-websocket connection being connected.

Is there a way that we could check (via an HTTP call perhaps) that would periodically check if a given update from the client has been received by the server?

I’m not sure if all updates have a clock or can be sorted, but a simple verification of “here is the last update or timestamp I have for you” would suffice.

We’re using Hocuspocus+y-websocket+y-prosemirror