Analysis board: How to unfocus keyboard input without using a mouse?

In the analysis board, there is no way to unfocus the keyboard input aside from clicking somewhere. There is an input option /, which focuses the (usually not too useful) chat window instead, but there doesn't seem to be a way to switch to the "normal" mode again where the standard hotkeys like L for local analysis, A for arrows or E for endgame tablebases / epening book would work.

Am I missing something there? If not, it would be great if a hotkey for unfocusing the keyboard input could be implemented. (<Esc> would be a natural one.)
(Mouse-based navigation has unfortunately become rather cumbersome with the recent changes to the arrow settings, so I'm trying to switch to keyboard-only navigation...)

Most (all?) web browsers still allow you to cycle through elements with the TAB (or backward with the shift-TAB) key. This will move focus away from the keyboard input box, and re-activate the hotkeys. At least, it works for me on Windows/Firefox.

Thx, that does work for now.

But I don't know how stable of a solution that is, as the number of times you have to press <TAB> depends on the specific order of the UI elements.
Atm, we seem to be lucky that a suitable element (that doesn't handle keystroke events) comes next, so one <TAB> is enough. - But there are other elements on the page that do (e. g. PGN input for normal analysis, chat window for game analysis), and who knows what future updates are gonna bring. So this method feels prone to being broken by a future update...