I have a private trello board I use to organise my work, I am a workspace admin and an admin on the board so I should have full permissions.
I have noticed that some of the comments on some Trello cards are no longer visible. For example when viewing the board I can see this card has 8 comments:

But when I open the card it only shows the latest 2 comments:

For this example I know that there used to be more than 2 comments on the card, and I have not deleted them. I haven't noticed a pattern of why some comments are not visible, because on some cards I can still see comments from months ago.
Does anybody know why this is happening and how I can resolve it?
Any help would be appreciated.