Build timestamp: Mar 2 2014 03:23:02
Maxsdk version: 2013
I hate to say this, but bug is still here. Although it changed it's behaviour a little bit. Now, if instanced geometry has deformational or non-deformational movement only, then it renders just fine. But if both are combined, then that same bug crawls back.
Also, it may be that mb can cause some instability problems in latest build. I had quite a few crashes to desktop - something, i almost never experiencing with Corona before.