Phone soft reboots when making or receiving a call [Nexus 6][CM13]

I've got a pretty severe bug that results in my phone soft rebooting every time I try to make a phone call or a phone call would be coming in on the main number. What I did to try to fix (no luck): 1. Downloaded latest snapshot: https://download.cyanogenmod.org/get/jenkins/158646/cm-13.0-20160418-SNAPSHOT-ZNH0EAO2NL-shamu.zip 2. Downloaded latest gapps for 6.0: http://opengapps.org/ (ARM 6.0 Stock package) 3. Wiped /system, /data, dalvik cache & /cache 4. Installed #1 and #2 5. Wiped /internal storage 6. Updating radio/bootloader to latest available What's going on? This just started manifesting after I did a cm13Nighty (4-11-2016) > cm13Snapshot (4-18-2016) upgrade. I would've thought the reset would fix it at least? ---------- Other things I've tried with no luck: 1. Disabling/enabling WiFi Calling 2. Booting into Safe Mode 3. Deleting com.android.providers.x folders in /data/data & wiped Dalvik/cache again (This fixed WiFi calling consequently - *dysfunctional again after soft-crash* - *interesting...*)