My company is undergoing an acquisition along with a couple other companies. This has meant there is some restructuring, but no major layoffs as of yet. It's not been an easy process, we are way behind where we ought to be and are still working as though we were separate companies. My old manager is still technically managing me although she should have handed me off by now, and my soon-to-be manager is... wildly unprofessional.
They complain constantly about the lead team in the UK, and don't seem to be able to swallow that they now work with an international team for a larger sized company. They complain that the UK "spells things funny" and have different terms. They complain about my current manager directly to me. They start Zoom meetings with heavy sighs and dropping their head in their hands. It's... alarming. I don't know if this is something I should broach to HR (who are wildly incompetent), or my manager (which I think would make it worse), or to the individual directly (who will have firing power over me).
I'm looking for other jobs, since my confidence in this individual as a professional is on the floor, but it's a pandemic and I don't want to be up Schitt's Creek without a Patrick. Do I keep my lip buttoned and let their unprofessionalism speak for itself or do I speak up?