Hello Martin_Purdy, Thank you for bringing this to our attention. We appreciate that you've taken the time to post your concern here in Microsoft Community Forum.We understand that you need help on how to get rid of the grey shading behind the comments. Let’s check on this together and find ways to address this matter.
- To better assist you on this one, can you please provide us a photo or a sample photo where it shows a grey shading on the comment section?
We look forward to your response.
Sincerely,Juhn Jac,Consumer M365 Forum Moderator