I’ve confrmed now that two separate threads that I am “tracking” have stopped showing up for me in latest or unread threads. One was LadyDuck’s journal and one was the Tiny Victories thread. It seems to be resolved after going into the thread and selecting “normal” then back to “tracking” for notification options. This isn’t isolated to just one of my devices - I noticed one on my phone and the other in a browser on a work computer.
Thought I’d pass it on in case it ends up being a trend