Galaxy S4 Updated to Lollipop, Now Crashes when Disconnecting from WiFi

I installed the Lollipop 5.0.1 update on my Samsung Galaxy S4 recently.  Since then my phone will crash and restart almost every time it disconnects from WiFi, and sometimes while connecting.  Usually this happens when I walk out of range of my network at home or work network.  It also occurs if I turn off WiFi setting while connected to a network.  I tried turning off Auto Network Switching but that didn't make any difference.  Not quite sure what else to try.