No change was ever made in regard to this. At the time, the overall thought seemed to be "wait for V2.00", then after the decision to continue slowly upgrading the current version, this issue was forgotten.
The "cloning" the brick solution does seem like the optimal one, looking at the past discussion.
One question that would stand is - in the interest of consistency, should this apply to stackers too? It's a subtle change that would rarely, if ever, have an effect (I can't think of any level so far that involves turning a lemming around mid-stack), but it's probably best to decide that before any levels relying on it appear.
EDIT: Nevermind, such a situation is impossible to achieve with stackers, since they place their brick on the very last frame of their animation loop.