MMM weird lipo cutoff. Trigger controls fan

[Dragonfueled]

I got a replacement v2 thats been working great . I hit the lipo cutoff today and it slowed down like a normal cutoff then just died. Steering worked normal but the yellow light on the esc was flickering really dim.. Weirdest thing is when I would pull the trigger on the remote it was controlling the fan. I could rev up the fan LOL... Waited 10 minutes put in charged packs and it seems to work now.. Is that a normal lipo cutoff or is something up. Why would the trigger control the fan?