You still have to convert from state to meta and back.
https://github.com/Draco18s/ReasonableRealism/blob/1.12.1/src/main/java/com/draco18s/farming/block/BlockTanner.java#L70-L78
(Note that the &1 will not be relevant for you, that is because that block only has 2 effective rotations).
I am new to modding and Java and I had this same problem.
In my mods.toml file I have this line:
modId="fdmapexplorer" #mandatory
FDMapExplorer is the name of my mod.
I found this in my main mod java file:
@Mod("assets/fdmapexplorer")
I know I didn't type that in so at some point my IDE(IntelliJ IDEA) may have tried to help. Anyway...
I changed it to:
@Mod("fdmapexplorer")
AND TA-DA! Everything works!
Hopefully this helps you.
You were literally told that the links won't work, then proceeded to complain about the links not working.
Regardless, you are obviously trying to run a version of Minecraft that we no longer support. Locked.