from the beginning of 2014 i told several times about bug in block creation [video of the bug is here (better to download than watch online). it was created for beta2, but nothing changes till now]
BETA. Problem report - BUG:0607 keep silence from the beginning
BETA. User forums (nothing usefull, and just beta testers posts)
ADN - Case ID: 09088442 (i was told, that i'll get an answer directly from developers. Nothing till now. Topic was closed.)
today i installed autocad 2015 :). bug is still alive.
you keep silence and do nothing because:
1. it's an expected behavior, and everything is ok
2. you dont know how to fix it
3. just now hear about it.
4. you have a direct plan of creating new useless features, and old bugs MUST become an expected behavior.
PS: now, i have a great quantity of blocks, that cant be normally inserted into a new drawing using copy/paste commands and ignoring of the problem from autodesk side
topic is here, because i think developers read just threads for programming (C++, C#, e.t.c.)