Default [Q] Does P780 enter deep sleep mode while charging?

Hi all. I wanna ask does your guys P780 will enter deep sleep mode while charging? Because mine did not enter deep sleep while charging, CPU frequency constantly runs @ 497MHz while charging, but if unplugged it will enter deep sleep mode. Just wondering is it normal? By the way I am on stock Vibe ROM 4.2.2 but rooted. And what's the temperature of your batteries while charging? Mine staying @ 45C while charging which is quite warm, ambient temperature is around 29-30C.
My Phone:
Lenovo IdeaPhone P780 | Stock Custom Vibe V1.0 1412 DEV 4.2.2 ROM (Rooted) | CWM Recovery

Home Tablet:
Toshiba Folio AS 100 | Cyanogenmod 10 4.1.2 Alpha 5 ROM by DerArtem | CWM Recovery

Past Phone:
Samsung Galaxy Grand Duos GT-I9082 | Stock XXUBMJ4 4.2.2 ROM (Rooted) | CWM Touch Recovery (Mum using)
Samsung Galaxy Ace GT-S5830 (Sold)