Dunno if this has been mentioned but :

Calling you “crazy”
Belittling you for symptoms of your psych issues (not to be confused with lack of knowledge & a genuine desire to understand)
Putting you down for being on disability
Saying they are right in an argument just because you are “mentally ill”

And I get that many people don’t understand the concept of variable functioning levels but when one day they say “ you’re just lazy, there’s nothing wrong with you” & the next day they say “ you’re mentally ill, your perceptions are invalid” there is a problem. Actually I guess there’s a problem w either of those in that form.