2.1.420 Part 1 Section 17.15.1.82, strictFirstAndLastChars (Use Strict Kinsoku Rules for Japanese Text)

a.   The standard does not state how to resolve conflicts between this element and the noLineBreaksBefore and noLineBreaksAfter elements when their settings conflict.

Word overrides the settings specified by the noLineBreaksBefore and noLineBreaksAfter elements with the settings from this element on Japanese text.