Yes. I very much believe she has.
A lot of people have experienced unconscious bias during thier life.
I know I have, based on my sex, age, disability, religious beliefs etc.
Have you experienced it?
Interestingly, in that interview with GB news, KB admits she has her own unconscious bias towards men when she conducts interviews.
"I myself have unconscious bias when I'm appointing teachers. I'm looking for presence. Men can come across as having.. you know...if thier tall, or they have a deeper voice, I have to check myself and think is this me being biased or am I picking the right person"
I don't understand her rationale on this one. She explains it really well - everyone can have unconscious biases, including herself.
But in this instances, KB has sort of jumped from JP has unconscious bias towards her , to concluding this means JP "hates her" because JP thinks all Black and Asian people, who hold right wing views, are betraying the left. (or words to that effect)