Check if you have wifi scan always active. (wifi - settings- advanced). Do not allow google to search for wifi networks.
Also reporting location to google and location history activated eat up a lot of battery.
If you deactivate those you will see a lot of improvement. Especially if you deactivate the first one.
In the description for installation you say "You must be on the 109808 baseband (for best performance). " I am on 109808 baseband. I did not flash the downgrade zip - not needed. I did not flash the 2030 zip.
I followed your instructions as provided and performed all wipes.
It is not a false bug and I thought it should be investigated. But if it is disturbing dont't bother.