So far the only bugs i see in KK stock is - Battery usage shown is not correct, stays in 100 for a while, then goes down - sometimes suddenly drops. But i charge once in every 2 or 3 days with moderate usage.
In the battery usage, wifi usage is shown as bluetooth usage. I see bluetooth even if i dont use it. I switched off wifi and the bluetooth is not in battery usage anymore even if i use bluetooth
Pretty stable and good battery life.
Nexus 7 (2013) 32GB | Stock Rooted 4.4.4 | TWRP 18.104.22.168 Touch
Kindle Fire HD 7" | Kinology 3.3
| Kindle Fire First Aide
LG G2 Tmobile D801 | Stock Rooted D80120E | Dorimanx 5.9 Kernel