Jailbroken iphone doesn't ask for passcode?

I have an iphone 6 plus running ios 8.4 and i jailbroke it with TaiG buy sometimes just sometimes when i slide in the lock screen it lets me into the phone without my passcode! And touch id won't work eithee and its not like a ghost access when you get in you can delete apps and everything

Those are the risks of jailbreaking.