LG G4 Upgrade to Android v6.0 - UI Problem??

[AC Question]

My LG G4 (on Verizon) was upgraded to Android v6.0 yesterday morning, and since then, the bottom half of my touch screen does not work while I am in GMail, Phone, Settings, or Hangouts (all I've tried so far). The entire touch screen works otherwise, such as to launch other apps, so I know it's not a hardware problem. Has anyone else noticed this, and if so, if there a fix? Thanks.