I am the admin of a board that my QA team uses. I'd like to add another field to the card layout for their board but no matter what I try, the option to ADD is disabled as pictured below.
The board was migrated from an on-prem instance to Cloud -- that is where the existing fields came from. I can re-order them and I have the option to Delete, just cannot seem to add more even though more fields do exist.
Anyone seen this before?

Small update. This is only happening in the 'Active sprints' controls section. The 'Backlog' is working correctly.
