Sort Blocks in the Backend

[nurkka]

I am trying to sort the blocks in the page editor via "sort" and "sortGroup", but they are still sorted alphabetically.

I tried every combination of "group", "groupSort" and "sort" with and without various values, but with no luck.
Does anyone know how to sort the blocks?

Additional question: Is there a feature to copy/clone blocks within the page editor?

Thanks in advance!