Did they fix the broken XP calculation bullshit on <40 minute mission types yet?

I have an urge to grind weapon XP. Or more frankly I want to be done with the Eruptor. After using this fucking thing for 20ish levels I am really starting to hate it. One major reason is the fact that it is currently busted, does AH know that they've fucked it again? If you fire it too quickly after cycling the bolt it will fire way off target. It did not used to do that.