Following up this ticket, I've the same feature-request, currently if I don't set the column size other than default 12, the label is always on left, and field on right. See attached Screenshot
Second Question, Is there a way to hide field group label from output when using Standard style? Currently I'm leaving the LABEL field empty for my requirements like I've a Field Group.
Screenshots:
Settings in the Fields Group
Seamless Style
Standard Style