Hi there,
I tried to delete tables which I just created, but for some reason it sometimes leaves behind completely empty tables.

They have no relations, no rows, no columns, no name.
If I try to delete them: Could not find an entity with specified entity logicalname: cr180_fit_productgroup
If I try to change it: Could not find an entity with specified entity logicalname: cr180_complexity
If I try to create a new table with the name fit_productgroup:

Why does this happen randomly and what can I do to get rid of them?
Thanks for the help.