Bottom of topic shows "There is 1 unread remaining" when there are actually 0 unread topics remaining

For some time (over 6 months) I have been having this problem and these issues also (using windows 11 and edge browser (Version 113.0.1774.42 (Official build) (64-bit)) :

I initially thought it was from switching between my phone and pc but it continued after I stopped using the phone to access the forum.
I posted about it on the forum where it was occurring and it was suggested to try a different browser (der).

I have changed to Firefox browser (Version 113.0.1 64 bit) and all my issues with discourse forums have resolved.