Sonic '06 was a late-alpha/early-beta build of a game which needed at least another year in the oven, but was carelessly kicked out the door just so it could be part of the franchise's 15th anniversary. It's an absolute mess of a game, with bizarre handling, extremely frequent and long load screens (often just for one line of dialogue!), and of course a mountain of bugs, and collision errors, and hairpin-turn controls, and brazenly stupid design decisions. Don't get me started on the story, either.
Balan, despite everything else about it, does at least seem to be more or less the game its developers wanted to make. It's more outright boring than outright broken.