Word anchors a wrapped frame at an offset; the model only knew a side, so a
frame the file puts 91mm in snapped to the margin and the text beside it came
out 20mm too narrow. wrapOffset carries that x (cm from the column's left
edge, Word's posOffset / ODF svg:x) and the float's outer margin renders it —
against the column vars, so an indented anchor paragraph cannot skew it.
Picking a wrap side in the toolbar clears the offset: that gesture means
"put it there".