Lock button wont turn screen off..

All I know is that I was installing a custom boot up screen and soon afterwards my lock button wouldn't turn my screen off. If I press and hold the button the option to power off, airplane mode, and restart window pops up but if I just click it nothing happens and my screen doesn't turn off. Any ideas what's happening?All I know is that I was installing a custom boot up screen and soon afterwards my lock button wouldn't turn my screen off. If I press and hold the button the option to power off, airplane mode, and restart window pops up but if I just click it nothing happens and my screen doesn't turn off. Any ideas what's happening?

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