From one of our members
If I follow a link which leads to the “The page you requested doesn’t exist or is private” error page, I can’t use the standard keyboard “Jump to” navigation to return from there.
The only way to navigate from that page is by tabbing.
Discourse “jump to” shortcuts - g/h, g/u, g/c etc.
u for “back” also doesn’t work.
(I couldn’t even get the keyboard “menu” pop-up to work, so that I could check I wasn’t having a brainstorm and muddling up the shortcuts. But I wasn’t. )
I’ve confirmed that once on an error page,
it is difficult (using just a keyboard) to navigate away from it you can’t use any of the standard Discourse shortcuts to navigate away from it.