Create a segment with:
statistic value - AAA is 1
OR
statistic value - BBB is 1
the segments overview ( developer.playfab.com/en-us/{titleid}/segments ) will, in the list, contain the string:
"Statistic value AAA equal to 1 And Statistic value BBB equal to 1"
The "And" should be "Or".
I think there will be even larger problems for more complex queries, for instance: (C and D) or (E and F) due to the approach used in generating this string