Recently I am noticing a huge difference in the number of threads shown in the Recent Unread Topics page between my iPhone and my PC, for example, while on the iPhone I can only see one thread, on the PC I am getting two pages.
Didn't notice it before, but still that's different, it returned 72 pages of unread threads, anyway its showing more posts now, but still not the same count, like there is a filter on mobile.