Mule's health bar shows 0/0
Possibly all horse type offspring but only raised mule so far.

Meta Info

• TFC Version: 0.X.X.142 on test server

Can't reproduce. It may be a desync issue, or either something from old worlds.

Also, while checking for this, i found that currently you can't breed mules because donkeys and horses don't seek each other when in love, which i already fixed in a PR, so hold your horses (pun intended) to test in a new world after next build.

Mules from previous versions. I'll close this now and re-open if needed once I find some updated version equines.