Not a bug but devs made it so where you can continue before you completed the game.
Before it was resetting the entire game save after you completed a plan. If you really don't like this feature just start a new game save.
As before every time you completed the plan the game would delete the game save and you would have to start a new game every time. Now you can continue where you left off before you had completed a plan.
This was listed in one of the patch notes from the previous update.