[BUG] Up down arrows cause More links to jump in mobile sidebar overlay #1603
Description
After opening the sidebar I press TAB a few times to go through the Site Navigation entries, something very weird happens: up and down arrows have no effect when focus is on the first few items (well, not no effect: the page scrolls in the background a bit), but once I focus on "API" or any of the links below it, pressing the up arrow does this:
Those are exactly the entries that are collapsed under the "more" menu in the non-sidebar version of the nav. Seems like maybe a CSS breakpoint is missing?
Originally posted by @drammock in #1585 (comment)