Constantly being matched without one teammate!

Apparently the 'Fill Teammates' option in the game was supposed to have been fixed weeks ago (according to Trello) which in reality is complete garbage & yet on average still 2 out 5 games (40%) of my Trio matches I am playing as Duos & just yesterday in 5 matches I played in a row I was a man down playing Duos in Trios in all of them.The game has always had the rigid target of 20 Teams in every match & whereas in various matches I have had a little as 40 players have been in the lobby it's always going to mean plenty of solos playing Trios.My games are bad enough with the amount of Pred teams infesting most of my matches but playing with the disadvantage of a man down just isn't cricket (or even fair).