See my previous post on it here:
That's very strange. Ive never seen a single bug in my demo, and bugs dont seem to be a common complaint with the game. The only complaints I see are
1. the effects are too bright and can cause you to get hit because you didnt see the attack indicator (this I agree with, although from the gameplay videos like the toymaker fight, it seems like theyve toned down the brightness)
2.the ridiculous hand holding with the camera zooming in on the same thing every few minutes to remind you what to do (also agreed, but since it's a tutorial and seems to very obviously have been made with "Demo" in mind I can overlook it)
and
3. NOT MUH CASTLEVANIA
which is still an argument I hear tossed around here and there.