I don't think its good for the memory usage to increase without stopping and eventually crashing.
Otherwise great game.
To my knowledge this is a older version than the one available on steam so a bug here and there makes sense. I played it back on launch and through its updates there's always been 1 or 2 bugs but nothing that a decent save habit can't mitigate. But yeah I do remember the bug you're talking about though I can't remember the cause there was something specific that set it off.