I do not have a definitive answer for you, but it seems like some kind of technical limitation on initial support for ICX7850. I can see that note in 8090 and 8092 documentation. 8095 has a pretty large re-write from an ACL standpoint and I do not see that limitation mentioned in 8095 documentation. ACLs will generally be applied at the vlan level starting from 8095 forward. It may be worth giving 8095d a shot for this specific use case.
Ben Beck, RCNA, RCNI, Principal Technical Support Engineer support.ruckuswireless.com/contact-us