Hi,
I too have the problem where multiple blocks of the same kind are not working. I assume this behaviour should be baked in – think how many paragraph blocks a page could have, so I’m working on the basis that something is wrong.
I looked around and found a thread discussing a problem with duplicate blocks.
They suggest using version 6.2.6.1
I tried that and it does solve my problem. Now I can have multiple blocks of the same kind.
Unfortunately, this version is flagged as insecure and is not a viable solution on a production site in the lon term.
I think it hints at a bug.
