I have no scene for this as it sometimes works correctly, sometimes fails. Please follow these steps to reproduce:
- create a few objects
- Use some of these objects in a Corona Distance Map in a Material
- Copy/Paste (not instance!) this Distance Map to another Material
- Try to change the object assignment in the copied Distance Map (not the original)
For me, the objects in the list will often ‘stick’, or objects will only be removed/added when I exit the Distance Map and display again. Sometimes, objects in a copied Distance Map cannot be removed at all and require you to create a new Distance Map from scratch instead of just copying it.