Power down splash screen won't show up.

[Orisko]

Hey guys I am new to the forums and I have ran into an issue with my nexus 4. It seems that once in a while my power down screen won't show. ( holding down the power button). Which forces me to do a hard reboot on my phone each time I run into this problem. After the reboot however the splash screen will once again work. Any tips or magic little fixes I could try to prevent this from happening? It seems this happens more often when I charge while the phone is on, and gets around 100% . Could possibly have something to do with when charging?