Expected behavior
Clicking the “Browse Categories” link at the top of the page results in loading a page with a list of categories.
Observed behavior
The link destination is https://forum.exercism.org. So if a user sets their home page to something other than “Categories” in:
Preferences → Interface → Default Home Page
then the page does not have a list of categories.
Potential solution
Consider renaming the “Browse Categories” link to “Forum home” or similar.