Still a bug in 4.21! :\ I just closed project settings, closed physics material. Then reopened project settings (checked to see if changes were still there and they were) and then reopened physics material. They finally showed up.
Still a bug in 4.21! :\ I just closed project settings, closed physics material. Then reopened project settings (checked to see if changes were still there and they were) and then reopened physics material. They finally showed up.