Hi, I've been playing around with the moon druid and discovered this bug where Tav would instantly die - no saving throws - when taking enough damage to instantly down you in wild shape.
Tav took 40 pts of damage from the boulette, whie in wildshape. She had 22 HP in bear form and 5 remaining on her humanoid form, with 38 being the maximum in humanoid form.
With 40 damage dealt there's an excess of 13 damage, far less than 38, which is what would be required for an instant kill as in the 5th Edition rules.
here's a video clip. I could reproduce the bug pretty consistently.
https://www.veed.io/view/5ebe656d-82b7-43de-8c5e-95275088ce0f?sharingWidget=true&panel=share