This bug was present at launch last year too, which I think was related to the option to save and exit mid-game, which the game allows and does not give you an advantage really. In fact since you have no control over pitching changes in player lock moments and you are asked to throw 130+ pitches to preserve a pointless shutout sometimes it’s more of a necessity than superfluous.
Haven’t tried to do that yet this version, but you have so little control over things in mto that there’s not much exploitative actions you can do. I can’t even ensure that there’s going to be a lefty in my bullpen for the playoffs despite having 3 on the last day of my season, and got walked off 3 times in the ALDS without the ability to bring in someone to face a lineup made of lefty hitters. Not to mention that you’d be put into the game with a platoon disadvantage and stars on the bench in postseason games needing to make up multiple runs all the time. And you can’t even substitute until they throw you a pitch. Tired of Mickey Moniak having to hit lefty relievers in the postseason close and late with Mike Trout somehow on the bench.