In my self-hosted install, I have a topic where the last post has been deleted. This topic shows up as if it still had unread posts:
Reading the post again doesn’t help. I do have an entry for this post in post_timings
.
One of my users is also experiencing the same issue in another self-hosted install.
I don’t have consistent repro steps. When I confirmed the report from one of my users, the topic appeared grayed out for me; and later on, it returned to black, although no changes were made to the topic.