2.4.27 SGS2 power button instantly locks

[Marchief]

The setting is UN ticked but pressing the power button still instantly locks the phone, in previous versions this setting had no effect even after reboot but on the latest it doesn't stay ticked when you leave and re enter security settings.
Pin lock enabled, 1 min timeout and lock after 1 minute sleep, show password interface UN ticked

Sent from my GT-I9100 using Tapatalk 2

 

[Marchief]

Cleared cache and dalvik but still the same, anyone else got this and can confirm?

Sent from my GT-I9100 using Tapatalk 2

 

[Fidelity]

Got the same problem on the most recent version of MIUI!