Usually once I have lurked on looked at a thread the tiltle in the thread list goes purple (as distinct from the virginal blue for the unread ones). However today this has been not happening...i.e the titles have remained blue. This was sporadic at first but now it seems to be all the time. I swear I have done nothing to customise, or fiddled with my registration in any way! And I am finding it oddly disconcerting.
Is anyone else having this happen?