On Amazon Japan quite a few reviewers say that the game is very buggy. Hope this is fixed for the English release.
Did you find many bugs Parakeetman?
On amazon I saw that only 7 people wrote a review for the game.
To answer the question not really, but then again its not like Im looking for them directly. Even on the PS2 version and DS one I didnt remember anything like game breaking. On Elminage 2 though I had a freeze.
If you are curious about what kind of bugs do exist heres a JP completionist site for the game which lists bugs they found / were reported to them. Its just one example. But when games have hard core fans they find all sorts of stuff. Reading through these is a good way to help avoid problems. Similar to folks here warning each other of problems with games that they are playing and how to avoid them.
http://spoiler.sakura.ne.jp/srv/el1psp/E694BBE795A52FE38390E382B0.html
Even more "modern" games like EO4 has problems too which can be found the same way, by searching for the completionist info pages and checking their found bug / issues sections. Class of Heroes all of them had weird stuff in it also. But generally as long as its not something as messed up as constant freezes / data loss / getting totally stuck in a loop. I tend to just go on my merry way in game.
Most likely people will get their parties stuck in dungeons more than running into a bug that will totally kill their experience. Fuck you swamp in the first game. Or just keep dying over and over lol