I am seeing an occasional problem with mqtt nodes, but I have not been able to replicate it. I do have the new flowforge dashboard installed, but I think it is unlikely that is related. The symptom is that when I try to deploy it says that a set of my mqtt nodes are misconfigured. To make the error go away I have to open the mqtt config node and click Done, then it will deploy ok. One time it happened I told it to deploy anyway, then opened the config node and when I clicked done it said I needed to deploy, but when I did that the flows file was exactly as it was before.
As I said I have not been able to work out what is triggering the issue, and it may be nothing to do with the beta release, but I thought I should mention it in case others have seen it.