最近未读消息的蓝色数字出现异常（本不该出现）？

[Jonathan5]

@Mevo

it represents “unread” messages

Here is a post I bookmarked yesterday. The blue circle is “new” and the grey one is “unread”:

@codinghorror

Grey means unread but not new. Posts you could have read the last time you were in the topic, but chose not to, for whatever reason.

Blue means new posts. There’s no way you could have read these posts, since they did not exist the last time you were in the topic.