Test layers which are fully contained within a single column.
LTR:
line1
line2
line3
line4
line5
line6
line7
line8
relative9
line10
line11
line12
opacity13
line14
line1
line2
line3
line4
line5
line6
line7
line8
relative9
line10
line11
line12
opacity13
line14