We have dropped our server render distance from 32 to16 and it has helped a lot since each client s now asking the server to generate less chunks. We have client-side-chunk-generation-enabled set to false as well.
We are also seeing this on our newly created world running on Ubuntu 20.04 with 4GB of ram and bedrock server version 1.19.51.01. Restarting of the sever fix the problem for a short while. As members are on the world moving around after about 5 hours block lag is noticed, and at the server has crashed/rebooted almost daily now. We have implanted 6 hour restart to help minimize the problem.
After more reviewing the issue we where seeing might be Education Edition being enabled, as I just noticed that I did not check it when generating the new world.
Just opened the 1.5 year old world locally that was on a server that was not updated to 1.17.30 and the crafting issue occurred. I did open it in the beta 1.17.40, as the system I am currently on is running that. I then generated a new world with the same seed and copied the level.dat over the problem went away. This world 1.5GB in size and lived on an ubuntu BDS for its life and had education enabled. looking at the attached screenshots it is also effecting nuggets
I am going to update our old world that is 1.5 years old later today and see if the problem happens, it has not been loaded in 1.17.30 yet. When we copied the level.dat over it did not mess with anything built on the server, or player inventory's or containers. Everyone login back in fine like nothing happened. I will also upload backup copy of the world that had this issue well.
We had the issue on our server. The only ones we noticed where Redstone or iron blocks, as we just started the world this week.. Our world was creating in 1.17.11.1 I was able to get around it by creating a new world with the same seed in 1.17.30.4 after the world was generated I copied the levl.dat to the world having the issue and the problem went away. We are running an Ubuntu BDS, with Education enabled.
Our server is still having the issue. Our work around that has help us, is setting server render distance to 16, and we do 4 restarts a day. Every once in a while the server starts to lag just before the restart, but it is manageable . If we increase render distance or reduce the number of restarts the server will almost always crash, within the restart window.