Sorry, I've never had to actually find a screenshot url, but hopefully this works. Since I past the Xen Lab, I can't get to the void, but here's two minor tile bugs:
http://prntscr.com/6y5l32
http://prntscr.com/6y5vx3
In the first, you can walk through the truck in Sheridan village. (Again, I don't know why my computer won't let me screenshot just the tab, so I just took a screenshot of the whole computer background.)
In the second, I'm pressing the up button but my player isn't going up that specific tile. However, if you go 1 tile left, then 2 up, then 1 right, you can get on that tile. But if you try pressing the down button, you won't be able to go on the tile I'm on in the screenshot. It's like an invisible wall, I guess.
EDIT: Also, I think Bug Bite not might be properly working. I had my newly purified Sewaddle battle a wild Zigzagoon, and the text says that Sewaddle stole Zigzagoon's berry, but it never ate it. My HP stayed the same... The Zigzagoon didn't seem to have the berry, either.