I noticed that all of a sudden, threads I already visited were bold, as if unread. This was happening regardless of whether I read the threads on my laptop or my phone. I then realized why: A few weeks ago, the "You last visited" section in the upper right corner counted both visits from PC and mobile. Now it seems to only count my last visit to Flyertalk on the device I am currently using, and by extension bolds threads as unread if I read them on a different device. Was there indeed an intentional change, and if so, why?