Flip cases and sleep...

[mwake4goten]

Ok my phone hasn't been the same since lollipop was installed...So I've been trying to save on battery in many different ways. One thing I noticed was my Wi-Fi wasn't going to sleep when I closed my flip case. I thought when I closed my flip case that the phone went into sleep mode. But when checking lollipop battery stats I see WiFi on all the time...I thought the phone went into sleep mode once the flip case cover closed and switched off the screen... Seems I will have to press the power button from now on to manually force the phone to sleep...Any body else with flip case cover noticed this...?