Stego Base tail hitbox

I was checking and testing some attacks on stego tails and I managed to get a fracture from a mostly base tail bite against a stego.
The test was conducted standing still and with me a a 90° angle to avoid as much as possible desync and strecthing my bite animation with mouse movements.
I think that part also counts as body shot for part modifiers but I have t oconduct more tests on that one.

I'm not 100% sure that it is a body hitbox being triggered but it's worth bringing up. Worst case scenario something else is messing up the hit detection.
IF needed I have a replay file too let me know and I can upload it.

The fracture seems to apply from a base tail hit

Fracture should not apply on base tail hits. As is normal