Weirdest bug ever, only one line of code

This is the weirdest bug i’ve seen or either i’m just going insane.

Got a Mc with a small and simple animation, stop(); on first fram of the mc and the last.

When i tell it to gotoAndPlay(number); it gotoAndStops, it’s insane.

Sounds like a simple code problem i know, but check it out, i don’t think it is.

http://www.bugiam.com/test/isthisabug.fla