This started last night, but when I open my inbox it won’t clear out the notifications unless I reply from the inbox. I have a tendency to click on the message for me reply instead of replying from the inbox directly. Because of this the inbox doesn’t clear the notification.

I think it would be better for the app to clear notification once you access it instead of forcing you to reply to clear it. In the image below, I have replied to the message the way I tend to and it still hasn’t cleared the notification.