[Bug]: 4.0.5 -> 4.0.6 broke IC2 Classic EU compatibility

[xJon]

[Bug]: 4.0.5 -> 4.0.6 broke IC2 Classic EU compatibility

[Speiger]

@xJon GalacticCraft searches for IC2 Core classes.
The whole ITickHandler implementation they try to use only exists in IC2Exp.
here is the code:

Galacticraft-Legacy/src/main/java/micdoodle8/mods/galacticraft/core/util/CompatibilityManager.java

Line 127 in acec442

fieldIC2tickhandler = clazzIC2.getDeclaredField("tickHandler");

IC2Classic has a whole API for this stuff (this says 1.10.2 but the api between 1.10.2 and 1.12.2 is 100% equal)
https://github.com/TinyModularThings/IC2Classic/blob/1.10.2/src/main/java/ic2/api/classic/util/ITickCallbackProvider.java

So there have to be patches made to have classic compat but it would remove a lot of Reflection code too.

[xJon]

@Speiger do you have any ideas about what's happening?