In the olden days, they used to file reports directly from the Answer Hub posts on your behalf, and handed out reference ticket numbers. These days? Dunno 
From my (somewhat dated) QA experience, I’d expect them to have a front-end DB / tool for users reporting incidents, and an investigation / verification team converting reproducible issues into proper reports inside an internal system of sorts which may or may not be proprietary. Chances are it’s a mutated Jira.
I’d say go ahead and report it, it may already exist so a bit of research is always highly recommended. If 1% of folks did that, we’d have a perfectly working translucent materials by now, surely. 