8to16 the issue happens because the FoF Filter extension fails to initialize properly. JS errors:
Uncaught TypeError: can't access property "get", flarum.reg is undefined
    <anonymous> app')":1
    <anonymous> admin.js:912
    <anonymous> admin.js:912
app')":1:38
    <anonymous> app')":1
    <anonymous> admin.js:912
    <anonymous> admin.js:912
I am not sure what went wrong there, updating the extension seemed to have fixed it though. The settings should load normally now, but let me know if something’s still wrong