There's nothing new there, it has always been like that, that's why it's better to win in 2 games. The teams that lose their first PO games are in the same situation: full salary for only one game. It's not an issue ;)
I agree, it is the rule for a long time. The last time I faced this rule is in season 40 (2017) and the last time i played a 3rd game without the home game in the next season is in season 18 (2012).
For the teams that lose their 1st PO game, they can recovered with the next week in which they don't pay any player.
In my case, I was in positive before the PO. But now, I might have all my players on sale in 2 weeks at 0 because of this rule. My net revenue is positive but not enough to compensate this gap and the interest created by this gap.