Problem! I discovered when I actually started using koreader last night that the frontlight immediately reduced considerably when koreader was started. I have always used koreader in nightmode (on the KV and h2o) and with a low light intensity (less than 10) The KA1 seems very bright to me and 5 or less works for me in the dark in nickle, but with koreader I was having to up it to somewhere around 20. And then I noticed the serious battery drain while suspended. So I'm back to some testing. I can't start koreader now with the changes I've made so I may end up starting over.
EDIT 9/12: Koreader on Aura One seems to be fine now but I'll be checking the battery drain tonight.
Thank you so much for the work you've done on this.