Using Forge 1.19.2-43.2.10 and MaxHealthFix-Forge-1.19.2-8.0.1.

When killing mobs with weapons strong enough to one-shot they don't actually die and instead get stuck in the dying animation client-side. And it seems like you do very little of the intended damage?

Steps to reproduce:

1. Join a world/server.
2. /effect give @s minecraft:strength 1000000 255 true
3. /summon minecraft:chicken ~ ~ ~ {Health:21,Attributes:[{Name:"generic.max_health",Base:21f}]}
4. Punch chicken.
5. Observe weirdness.

can confirm this also happens on 1.19.2 fabric

Thank you for submitting this bug. I am able to reproduce the weird issue you have described and will start working on a fix.

After looking into it for a bit I was able to find and fix the issue. An update is out for 1.20, older mc versions will get the fix soon.

Thanks for your patience on this, I've been in the process of moving and it was a bit more work than I expected. This should now be fixed for 1.18.2, 1.19.2, 1.19.4, 1.20, and 1.20.1.