There is a possibility of theme/plugin conflict.
Testing for a theme conflict…
Activate default WP theme.
If the issue doesn’t happen after activating the theme, your theme is causing a conflict.
Testing for a plugin conflict…
Deactivate all plugins, and if the issue doesn’t happen, one of them is causing a conflict.
Activate and check each plugin one by one.
Thread Starter
arayaz
(@arayaz)
Thanks for the suggestions. I deactivated all plugins and then deactivated one by one.
The preferences are now back. I suspect a cache problem.
I also had this issue. Deactivated all and then reactivate them and it appeared in the menu.