turns out this is my common workflow and it’s suddenly broken.
tap into a folder
tap onto a story
swipe right back to folder
swipe right back to full river
Once the last step is done, that entire folder shows an empty story count (eg as if all were read). If I refresh the river the remaining story count comes back, and if you tap into the “empty” folder all of the unread stories will show. However if you repeat the steps on another folder (say, “folder B”), then “folder A” is missing and doesn’t reappear until a river refresh.
I have a screen recording, I can email it to Samuel if wanted.
This is 13.0.0b3, but it was probably broken in the earlier betas as well- not specifically from b3.