It appears, like in the title, that sometimes threads that I haven't even touched loose their 'unread" status. Like, I have the Gender Identity subforum open for an hour or two, some unread topics... after that time I hit refresh and most of the topics goes to 'read'. I also have issues with that on mobile, except there it's the other way around. I log from both devices via remember me option. Should I be worried, or is it some glitch in the forum engine?