RoundCube Themes Selection Disabled?!?

[Pintwin173a]

Haven't checked my email for a couple of weeks, and to my surprise (and abject horror!) themes are unavailable (no big deal, but see Fig. 1) and the default screen has changed from 'Desktop (wide list w/ mail preview below)' to 'Widescreen (3-column view) (a big freekin' deal, see Fig. 2).

I've been using Desktop View on all my email clients since the days of writing on clay tablets with a sharp stick ;-)

And it's easy enough to change... if only RoundCube's Mail Options weren't pared down (once again, see Fig. 2).

How do / can I change it back to Desktop view?

Thanks in advance,

Pintwin173a
(the reincarnation of Pintwin173)

 

[Pintwin173a]

(Note: Title should read "RoundCube Layout Option Disabled?!?"
Of course, one can't change the title after it's been posted ;-)

 

[mrburnsx]

Towards first screenshot, from what I can read, that has been removed by Roundcube and uses Elastic theme now.

2nd one is because elastic theme doesn't support that so that has also been removed by Roundcube