Wifi password lost every time I reboot my phone VS985 - Verizon LG G3 - CM12 Nightly - 5.0.2

This has been going on for a few months now, and is just driving me bonkers. Every time I reboot my phone, and am home, my phone forgets the password for the wifi. All other devices in the house (iphone, ipad, laptops, kindles, chromecasts, etc.) do not have this issue.

This only happens for my home router – passwords for other networks are surviving reboots.

As I have my phone how I like it, I don't want to start from scratch. I tried wiping system, but it's like the password is a part of my personal data and that for some reason it is forgotten so often? Does anyone have ideas on how I could go about fixing this?
Not a solution, but a work-around:

The WiFi password is not stored on /system – it's in /data/misc/wifi/wpa_supplicant.conf. As you're using CyanogenMod, it should be safe to assume you're having root access. So you could use an automation tool (yes, I've got tasker in mind here) to copy that file to a "safe place" whenever shutting down the device, and have it restored from there on each boot.