Aside from the mandalorian stuff:
She spread untrue leaks from birds of prey (which led to paedophilia claims from some articles) and refused to apologise/back down - Cathy Yan and Ava DeVernay absolutely demolished her though
Claimed that John Campea was taking bribes from Disney (or something similar) despite having actually given a positive review to BvS
There's definitely more that I just can't think of atm. My main problem is her arrogance and refusal to admit when she's wrong