Trying to build my first block with MB Blocks. I can create and use the block. Everything works. However, when I try selecting a category different from the default "Text", e.g. "Design", when I save the block the category always reverts back to "Text". If I enable a block plugin that puts a different category at the top, I always end up in whatever category is at the top of the list.
The theme makes no difference. I do have plugins but none that seem to make a difference: I tried Code Snippets, Embed Any Document, MainWP Child, Meta Box, Meta Box AIO, Nav Menu Roles.
It seems that I'm missing something required to be allowed to select a category. Any thoughts? I can give you access. Thank you.