TurnBasedMatch.getParticipantId(PlayerId) returns null

[TroelsN]

After the latest update to Google Play services, TurnBasedMatch.getParticipantId(PlayerId) returns null even though the documentation states that this cannot happen.

My app loads all turnbased matches for the current player. For some of them TurnBasedMatch.getParticipantId(PlayerId) returns a valid participant ID, but for others it returns null. I pass in the same player ID as parameter to all of them.

If it is of any use in debugging, the ID of one of the offending matches is this: ChEKCQjW5MPSrB8QAhACGFAgARC_9Prer9bg-z8