Using Drupal 8.6.1, Display Suite 8.3.1, Printable 8.1.0 (ex-Printer, email and PDF for D7)
My content type A is displayed with two columns stacked (provided by Display Suite) and it works fine on the website.
I have activated the special view mode Printable provided by Printable (of course^^) and clone the default layout with just a few changes (smaller image, inline labels, etc.)
When I open the print version of a node, the layout is not considered and I have only one column with labels above values, for example.
Is there something I need to set somewhere to get the two columns layout on my print version?