I would like to refer to MC-133880. It is not the same issue, but might be a similar solution to that problem. That issue does also only affect blocks in chunk edges.
Sounds like a duplicate of MC-133653.
I'm not sure but does that matter? My client is not modded and the client should send the packets once. That doesn't depend on the server, does it?
I would like to refer to MC-133880. It is not the same issue, but might be a similar solution to that problem. That issue does also only affect blocks in chunk edges.