This has been all over the place for now, and I've gotten quite a handful of people telling me about it, but I fixed this weird bug in the game that when you get the ending from destroying Father Tree, your max acre count will reset back to 16.

This had something to do with Scott making it so that the game would transition the 16th "chapter" when you trigger the ending, although the chapter count just keeps going up every time you meet with Chipper when you have enough Beaver Points, and the chapter value also correlates with the max amount of acres you have, thus when the ending is triggered, you would then not have access to later acres after 16 until you would meet with Chipper again.

Yeeeeah.... Scott didn't really think of that too well, didn't he? *tsk tsk*

But anyways, it should be fixed now!