Cool,
I might have a play with your code then to see if i can figure out where the interaction is coming from.
This is an image with 5E Death Indicators extended and no Height.ext
(My work arounds for height, The wing and number tokens are what i was planning for indicating creature was flying and its height, the other way was to change the number of the creature add a 0 and height hence its not creature 0140 , it indicating its at height 140)
Attachment 33370
This image is with the Height.ext turned on, and that was only change. As you can see the damage system has reverted back to vertical rather than overhead HP bar. The blood has vanished. And you can see what happens with the font (arial because your font was invisible)
Attachment 33371