The read/unread dots and flags are missing from some pages. This also happens with all browser plugins disabled and unloaded.
It doesn't appear to correlate to whether or not any stories are read or unread, as I've checked authors that I know I've read, and authors I know I've never read, and the results are not consistent.
Inspecting the page shows the following error in Firefox:
Uncaught TypeError: document.getElementById(...) is null
setDots https://storiesonline.net/res/js/dot.2.0.js:1
Or this error in Chromium based browsers:
Uncaught TypeError: Cannot set properties of null (setting 'innerText')
at XMLHttpRequest.setDots (dot.2.0.js:1:461)
Affected page examples:
https://storiesonline.net/a/michelle-marie
https://storiesonline.net/a/dawn1958
https://storiesonline.net/a/Joe_J
https://storiesonline.net/a/bjoe1228
This appears to occasionally happen on the Advanced Search result pages.
Unaffected page examples:
https://storiesonline.net/a/R_J_Richards
https://storiesonline.net/a/Raconteur
https://storiesonline.net/a/XenoLover
https://storiesonline.net/a/HAL