Case-sensitive user names in Oracle ASM 12.2

Seems that with the upgrade to 12.2 version ASM recognizes the cases. We were able to create users asmsnmp and ASMSNMP. First we created user asmsnmp and expected this will solve the incident (lack of asmsnmp user, which was used by OEM to monitor ASM and gone). But the OEM still presented the red icons. We thought about a mistake in password spelling or so, but finally the friend of mine created the ASMSNMP user and the OEM cleared the alerts. Also there is no longer --password parameter - to change the password one simply adds --modify (ie. orapwusr --modify asmsnmp).