Press Tab until the Profile Icon is selected.
Press cursor down key. This opens the Profile dropdown menu.
Press cursor down key. The "change password" entry is selected.
Press cursor down key again.
Expected result: I can use cursor down and cursor up key to navigate within the Profile dropdown menu.
Actual result: Nothing happens. I must use Tab and Shift-Tab instead.
Navigating through the elements of vertically presented entries of a pulldown menu should consistently allow to use the cursor up and cursor down keys as it is implemented for the select component: https://ux.folio.org/docs/guidelines/components/select/
9/20 Feedback from CU Boulder Accessibility - Screenreader users expect to use up/down arrows to navigate a menu.