Firefairy

I haven't gone through and poked at this a great deal, but I wanted to post before I forget. I slotted Distortion Field (Time Manipulation power), which has a recharge time of 1 minute, 0 seconds, with a Level 20 Invention Origin Recharge Reduction Enhancement, which says it "Increases Recharge Rate by 25.6%". My expectation was that the time for the power to recharge would go down by 25.6% of 60 seconds, or 15.36 seconds, leaving me with a recharge rate of just under 45 seconds. Instead, it is 47.77 seconds. Am I just not understanding how this math is (intentionally) being applied, or is this a bug? If I am just not understanding, I would rather save myself the trouble of digging up further examples, but if it's a bug, I am willing to check the math on my other enhancements to see if this is the only example.

The Arcane Bolt ability in the Sorcery pool powerset says in the description and header that it has knockdown, while the actual mechanics give it knockback. Hoping this gets fixed to make the mechanics match the description rather than the other way around, because I took it specifically because I was under the impression it had knockdown. Knockback annoys pretty much every tank I play with.