Default [Q] Can't turn off Wi-Fi & mobile network location

Help! I'm running a rooted LG G2 under Verizon -- 4.2.2 and stock ROM with the Nova Launcher.

Here's the problem:
When I go to Settings -> Location access, I cannot turn off "Wi-Fi & mobile network location."

As soon as I turn on the main "Access to my location" slider, it asks my permission for Wi-Fi location. If I decline, it won't turn location on at all.

Once that main location setting is on, "Wi-Fi & mobile network location" is already selected. If I try to uncheck it, the checkmark will return when I come back to that screen, or simply reappear after a second or two.

The "GPS & Verizon location services" works as expected -- I can turn it off, and if I turn it on, it asks for permission again.

Any ideas what might be forcing "Wi-Fi & mobile network location" on? I could list everything I have installed, but I thought there might be a known culprit. Many thanks!