You assume there is anyone working on Office 365 OWA who is doing anything but the mandatory re-skinning whenever MSFT rebrands their Office/cloud offerings yet

You assume there is anyone working on Office 365 OWA who is doing anything but the mandatory re-skinning whenever MSFT rebrands their Office/cloud offerings yet again. But evidence points to the contrary; to wit, they have yet to implement S/MIME signed email in anything but an incredibly useless way: the email is not displayed, but a link says "This is not supported in the current view, please click here", and when you click it a popup (Yes! A real 1997 era popup! That your browser will complain about and induces even more clicks! OWA loves them!) appears that displays the actual message but fails to verify the signature.