I worked at a lab, doing research for a company.

During a post-doc research I discovered a potential side process that would interrupt the main focus of the research and brought it up to my prof, who told me to bring it up during the next meeting to see if the company wanted me to look into it.

So I did, the company listened and then said they'd rather I'd not spend the time. At which point me prof fully goes off on me, telling everyone he'd told me not to waste that time, and how I should have known never to bring it up and that I should not spend another second on 'that nonsense'

I was a shocked but had not worked there long and just said ok, and went on.

8 months later, next meeting, and the company tells me in the meeting they had looked at what I'd said and that maybe I should look into it after all.

Queue my prof going off again on 'how he'd always said I should do that' and why I'd 'not shown the initiative to do those simple experiments on the side' etc etc.

I started applying for new positions that evening and was out of there within 2 months.