Default [Q] Unable to turn on the phone conventionally

Hello. Months ago I debricked my device using a Riff Box JTAG.
Since then, my HOX won't turn on if I simply press and release the power button. Now I need to hold it, then the touch sensitive buttons area begins to flash 15 times. When it stops flashing I release the button and just press it again, then the phone turns on.

Eventually (1 out of 100) I notice this procedure is not needed and the phone turns on conventionally.

Have anyone else experienced this behavior?