block with brackets

[svorgodne]

I have inserted a block from my website and it always adds brackets at the end like this:

block_name[2]

It is not possible to rename it because the name seems not to be valid. The block exists with the name though.

It doesn't depend on the browser I am using because I have changed to different ones.

Any clue?

Thanks in advance

[dirkvandonkelaar]

Hi,

Have you tried "save as" in block editor, then purge the old block?