There are two problems with attributes DnD while creating product type:

1. There are missing animations for removing groups, also add animation isn't same as in other DnDs
2. Placeholder always is shown at last position, but after drop it can be added on different position

Fixes:

1. Adjust animations to be same as in DnD CT fields
2. Placeholders are removed, now while dragging whole container should be blue, if you drag item, other groups should be grayed out