Should girlfriend have told me she dated outside race?

I've been dating this girl for three months, and only this week have I discovered that her previous boyfriend was a Black guy. Only when she's scrolling through some old pictures and casually points him out. Now, I don't have a racist bone in my body, but I think she should have disclosed that early on, in case it was an issue. Is her lack of candor a red flag?

Should girlfriend have told me she dated outside race?
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