I work within a team who provide specialist knowledge to other parts of the company- we all WFH. Our manager is part time and by his own admission, has limited knowledge of our day to day work.
We provide reports to the director of the team we've supported and whoever happens to be working will write it up. My issue is that one member will write the report such as 'We was ...', 'We done ...', 'We is ....'. No ND/SEN and the rest of her report is fine. It makes her look ridiculous and likely reflects on the rest of our team. I'm sure I've made grammatical errors myself, but it makes be cringe. Would you try bringing it up with your colleague, forward the reports to our manager or do something/nothing else?