Clean Slate Glitch?

You have convinced me now, that it is a glitch. There is though, two points I have to disagree with you about:
1) You cannot use "common sense" to explain things. "Common sense" is merely a label, it is not logic.
2) You cannot predict the future actions of Nexon, as with your "possibility to create a 500 slot cape". As stated somewhere in the earlier pages, many of the glitches such as jumpcasting with mages or HP washing became features when Nexon let them slide. Why would they give you a chance to make "false" stats that give bowmen the same survivability as Mages?

I commend you though for typing this out, contrary to Felix and Opeth, who merely just stated that I'm stupid or dense for thinking logically.

On the contrary, I think DS's post was much more 'logical' than yours have been.

It doesn't matter whether you (or Nexon, for that matter) likes the idea of extra slots. The fact is that it's almost definitely an unintended feature.

@ Stereo
I'm almost certain you can jump + Maple Warrior. Just that its animation lasts longer than a jump, so there isn't as much of a point.

@ Avenge
Though the attack is still based from the ground, it's still occuring at the same time as the jump is, which can't be accomplished any other way. That's the common definition of 'jumpcasting'.

@ Gummy
It's not a coding glitch. Doesn't mean it isn't a glitch, period.

http://dictionary.reference.com/browse/glitch
"2. Computers. any error, malfunction, or problem."

Nexon did not intend for bowmen and mages to jump and attack at the same time (I could elaborate on why I think this is so), and since they can, it's an error. A glitch.