I've ran into two problems.
The first problem I ran into is the game freezing when certain enemies are near by.
It might just be the browser that I am using, Firefox, but when two archers or wolves are after you the game glitches and eventually freezes.
Also, if you have a wolf chase you in...
I made a mistake that is bad enough that I am going to have to reset my save data.
I placed a pallet in the walkway headed to the wilds and can't pick it up or walk past it.
It would be nice to be able to move placed items like the pallet and fireplace.