As of version 1.3.0.125, Workbench only permits adding EntitySlotInfo to a SlotManagerComponent, and it is no longer possible to change the slot class to any other type.
Edit: This is still broken on stable version 1.3.0.130.
As of version 1.3.0.125, Workbench only permits adding EntitySlotInfo to a SlotManagerComponent, and it is no longer possible to change the slot class to any other type.
Edit: This is still broken on stable version 1.3.0.130.
Can reproduce on my machine. Please fix!
Workaround is duplicating existing slot with class you want, or manual edit of prefab in notepad.
Can also produce on my machine, only solution is to copy from another prefab or to edit the file with a text editor. Very annoying.