Thanks ! I agree with you about the objectives not having some way of telling the player he got the objective or not.
For the camera I have configured some smoothing but I think that we got used to the way the camera moves and passed on this too early.
For the bug it's kind of strange, are you sure it wasn't a curse behind this ? (no friction for example) We didn't saw this while playing or maybe it's a web version exclusive bug feature ?
Again, Thanks for your comment !