The procedure for reordering categories as they appear on the landing page for logged in users, as set out in the documentation here, seems not to be working.
I am unsure whether this is likely due to a recent beta update, or some related setting I recently and unwittingly played with, but would much appreciate any suggustion to get category display ordering priorities working again.
Per the posted procedure, I have enabled fixed category positions and fixed category positions on create and have assigned numeric priorities such that my most preferred category appears above my less preferred category in the reorder categories dialog, and I have clicked the save button.
Clearing the browser cache, closing and reopening my browser, logging back in (as administrator), and checking the category order showing in the reorder categories dialog shows the settings were indeed saved - however still posts from the less preferred category always display first, completely filling the landing page display by default when the site is first opened by a logged in user - even though it has much less recent posts than the preferred category, and much less activity generally.
As a result, anyone visiting the site/checking in would conclude at a glance that nothing much has happened there for a long time - unless they happen to be one of the very few who are up to speed with the way posts are organized by Discourse into categories, and that they would first need to click on a different category heading in the left sidebar, in order to see anything recent that is relevant to them.
