ODK Collect 1.28.2 beta
Under Android 5, none of the boxes for multiple select show up, and without boxes a selection is not possible. This worked in 1.27.
columns-1 No boxes, no selection possible
horizontal No boxes, no selection possible
compact-1 No boxes by design, selection possible using frame
label No boxes, no selection possible.
So only compact-1 and other compact-n is usable under Android 5.
This page is very old, and there is a length discussion without final result. Would it be possible summarized what the current state is?