Bashing willowisps without a magic sheild
 

now i know this is probably so far down the ladder when it comes to fixes but i figured id say something. im not sure if it is supposed to be like this but with a non magic shield bash still works on willowisps

If you're bashing with large race's slam as opposed to tank ability bash, slam checks shoulder slot.

Its a dark elf warrior and a vendor non magic shield.

I was able to replicate this by bashing with a paladin using a non-magical wooden shield.