Modifier keys (Shift, Alt Gr etc) doesn't work in Glish

Trying to install a custom image, having some trouble editing config files since it's not possible to do Ctrl+W/O in nano or : in vim in the Glish console. Not at a point yet wher the Weblish one or ssh is available.

Is there a solution to this?

EDIT: if you press F2 it seems nano exits and asks to save first, which works. But since I can't use Shift I can't fix the case-sensitive config…