Download tinkers construct 1.16.5 and mantle, blood magic 1.16.5, forge 36.2.31, apugli 1.16.5
Create a creative world and look up bu (if you want blood magic crash) and pat (for tinkers construct crash
the connected file is a crash report for tinkers construct
also if you have jei the buckets simply not show up
crash-2022-03-22_01.01.32-client.txt
)

I'll see what's up with this in a bit.

I think I know the issue.

Forge handles fluids in a different way to Fabric, these mods use that method too.
If I swap over to that method for the Forge version for the Edible Item fluid in bucket detection, we should be fine.

Fixed by doing the above.

Will be patched in Apugli v1.5.1.1

Pushed v1.5.1.1, this update should this this issue.

Thanks for reporting this to me, I would've had no idea otherwise.