Burning Ground Map Mod Doesn't Cause Enough Flammability to Ignite Player

Bug Report ID: #347627597

I have 1800 max life, low max energy shield, and nothing on my gear or tree to increase my ailment threshold, and yet burning ground isn't bringing my flammability above 26 before it starts dropping off. Even when I stand on burning ground, my flammability just bounces between 22 and 26%.

This means burning ground never ignites my character unless I'm on very low life or getting flammability build up from another source...

I imagine flammability shouldn't be decreasing while the player is still standing on burning ground.