Even for the drivers license I am sure they counted if I still had 90 days left on my visa. A friend of mine just had to postpone getting his drivers license for car because of this rule, he will have to wait till he gets a new 1-year work visa. The "need to wait 1 year before you can do your next driving license" rule is correct indeed.

So it looks like in Xiaguan they only know half of the rules. Seems like you've been already lucky that they even let you apply for a drivers license on a 1-month visa! Maybe you will be lucky registering the bike in your name too over there. They are defenitely not applying the correct rules over there, perhaps the mail pigeon carrying the new rules hasn't reached them yet.

Good luck!