Monk un-centering with certain weapons they are proficient with natively.

[Certon]

Monks are given the weapon proficiencies of Club, Dagger, Handaxe, Heavy Crossbow, Kama, Light Crossbow, Quarterstaff, Shuriken, and Unarmed. If these weapons are a native monk proficiency, then why do they become un-centered when using the Club, Dagger, Handaxe, Heavy Crossbow, and Light Crossbow?

I believe this is a glaring oversight in the original development of the monk class, and it should be addressed. None of these weapons should un-center a monk if they are base proficiencies. That makes no sense.

Can I get an official response on this? Why would anyone use these weapons, and hence, why would the developers even bother to create such a penalty that the core classes central power is invalidated by a native ability?

I suggest monks not be un-centered with weapons the base monk class is proficient with. Easy fix. Either take those weapon proficiencies away, or make them centered with them.