Default [Q] Who to enable option:stay enabled CM11?

hello all,

I have a DHD in CM11BR3-ace 4.4.2, mode S-OFF, I can not activate the option: stay enabled on the options menu for developers it is disabled and not possible to check (disable). The MobileGo wondershare software detects whenever I connect via cable that my device is in standby mode even though the screen is lit.

Please give me your help

thank you
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