2.1.899 Part 1 Section 18.17.7.45, COMPLEX

a.   The standard states that if real-number has the value 0 and imaginary-number has a non-zero value, the resulting string contains just the real number.

In Office, if real-number has the value 0 and imaginary-number has a non-zero value, the resulting string contains just the imaginary-number and suffix.