Hi Steve,
~~Sorry for my late reply.~~
According to the information you provided, I have tested on my side, and I can’t reproduce the same situation. Since the issue exists in a specific list, please check the following points:
~~1. Please create a new list view and check if the issue still exists.~~
~~2. May I reconfirm the current content type of the Announcement list is Announcement or not?~~
If the situation still exists on your side, I would like to suggest you use the Announcement app to create a new announcement list, then create/display the same columns, then go back to the original announcement list, click Edit in grid view, copy the data, go to the new announcement and paste the data.
~~Regards,~~
~~George~~
**[Updated by George Jiang MSFT 09:36 AM 04/27 2022 UTC + 8]**