I've never gotten any of this and my experience has been the total opposite. When people find out I'm Dominican, they refuse to acknowledge my blackness. But if I never mention I'm Dominican, they'd never peg me as a Latina. Literally I have people straight up TELL me I am not black, I'm Dominican. This happens to me all the time, at every job, any function I've ever been to. And that comes from white, African-Americans, East Asians, Dominicans. If I say I'm black, people will be like ".....wtf you speak Spanish?" and if I say I'm Dominican, people will be like "you're not black....." because around my way, to most people black=African American. And as a non-AA, to them I am not black enough or not "really black". Literally the only people who've never done this are other Afro-Latinos who claim their African roots who understand where I'm coming from.
I remember the first day of one of my classes in college, this girl that I have never spoken to came up to me and she's like
"You're Dominican?

"
and i'm like "Yeah....." and she's like
"But what do you identify as

"
and it was like "What do you mean...Afro-Dominican?" and she was like
"


I DO TOO. THERE'S THREE OF US SO FAR! WOULD YOU JOIN MY CLUB!"
And it was so funny to me.