I can confirm this, I believe it is true of every sub-forum in the "General" section ("LDraw.org Announcements", "General LDraw.org Discussion", and "Help").
EDIT: Nevermind, "LDraw.org Announcements" seems to be fine, I could have sworn there were posts there a few days ago that were flagged red without a notification on the front page. And "Help" doesn't have enough volume for me to tell.
EDIT: Help finally got some posts in it, and it doesn't appear to have the issue either.
EDIT: It appears that off-topic is affected too. I'm not sure what's going on here, but I'm pretty sure it's not just my imagination.
EDIT: The bug appears to be gone... I don't understand. I swear it was happening for real. There can only be one explanation.
EDIT: Nevermind, "LDraw.org Announcements" seems to be fine, I could have sworn there were posts there a few days ago that were flagged red without a notification on the front page. And "Help" doesn't have enough volume for me to tell.
EDIT: Help finally got some posts in it, and it doesn't appear to have the issue either.
EDIT: It appears that off-topic is affected too. I'm not sure what's going on here, but I'm pretty sure it's not just my imagination.
EDIT: The bug appears to be gone... I don't understand. I swear it was happening for real. There can only be one explanation.