In MDL-50554 I submitted a patch which was accepted that removed the outline for navigation when tabbing because of an issue with Chrome. Since then new information has come to light and I've raised MDL-50659. Currently with the fix you can still understand what the current item is because in the Clean theme at least, it is underlined. I am really worried that in MDL-50554 I have inadvertently caused a regression. Therefore is this a problem? Is it a big problem? If so then does MDL-50659 need to be a 'blocker' and I'll submit a retraction patch?