I need to remove a sprite from an atlas...but when I click the X, then the red "Delete" button, I get the "Operation Canceled" popup that says "The selected sprites can't fit into the atlas...". But I'm just trying to remove, not add anything.
I have tried checking/unchecking the options in the Atlas maker and tried deleting different sprites, but I still get the same error.
I just updated to 2.6.4, but I haven't tried this operation for a few versions so I don't know if it is a new issue.