There is a different between EZ_1 (old) roller shutter and EZ_3 (new).
EZ_1 uses Z-Wave Command Class for the Blind position reports type in the advanced device settings, EZ_3 uses Fibar Command Class.
I remember, that I changed the report type from Z-Wave to Fibar for test purposes. With the report type Fibar the roller blinds didn’t report the dimmlevel state. So please try to change the EZ_3 from Fibar to Z-Wave and try it again.
This is the post where I changed the command class (sorry, only in German language). And Caseda explains something regarding the differences (in English):
