Limited features

I started the jam with lots of gameplay ideas and a vision, but my final product ended up much different than I imagined. Much more like a mechanics demo prototype than an actual game.
On my last day I had to spend a lot of time squashing bugs and refining the mechanics...there was just no way I could add any major features without breaking what I already had started.
Did anyone else face the difficulty of having to change scope in the middle of the jam and make sure you could finish something?