This could be a software glitch, so it may be fixed by a future update.Powering the Moto X Style Pure Edition off and on again will disable safe mode.
If the problem is gone in safe mode, then an app is likely the culprit, and you can try uninstalling each one-by-one and testing for the issue. Try booting up in safe mode by pressing the Power key, and then touching and holding Power off before tapping OK when Reboot to safe mode appears.