Opening the language switcher (or the account popover) and then dismissing it
left the unpinned rail stuck expanded. Those menus are portaled and unmount
while focused, and browsers fire no blur when a focused node is removed — so the
wrapper's onBlur never arrived and `focused` stayed true forever.
Keep the React-tree onFocus/onBlur (portals bubble through it, which is what
correctly holds the rail open while its own menu has focus) and add a safety net
for the one case they miss: when focus has landed nowhere, clear it.
peter
bcec462ef6