What is it that you think is wrong? That your links behave differently sometimes than at others? That is the way it works. It depends on whether there have been new posts, and whether you've read them, and your cookies, your browser and device. It's complicated, I get it. But you're not describing anything I would consider alarming or broken, you're just pointing out something that seems curious to you, which nobody else is reporting as an issue. It sounds to me like it's working the way it is supposed to. I suggest you live with it for a while, and if you really think something is wrong, make a new report with specifics of the issue, why it is a problem, etc.

Have a great night.