Reply to What are the specific "button bugs"?

In f/w version 1.2 (and older) there were some button bugs. Evidence of this is in the DJTT store when purchasing a custom vci100 or vci100SE.

What were the buttons and what bugs did they have? Could you please specify WHICH button(s) had/has the issues? What was the original tag/label/use for this button under f/w 1.2? (since they're different in f/w 1.3 with traktor 3/Traktor pro)

Also, did the f/w update purchasers get rid of these bugs when they upgraded their units?

Thanks!