I'm not sure if this is intended or not but the Terra Shatterer spawns a crazy amount of dire slimes as it isn't registering as a shovel

Apparently you can fix this by adding

@OverRide
public Set getToolClasses(ItemStack stack) {
Set set = Sets.newHashSet("pickaxe");
if(whatever) {
set.add("shovel");
}
if(whatever) {
set.add("axe");
}
return set;
}

The main problem with this is there would be little to no point in trying to upgrade the shatterer. Can you disable the insta break of dirt then ?

Use a stone of temperance if you're really concerned.

Well the Terra Shatterer is a pick and is not an axe or shovel, so probably not going to change.

Your solution would be to actually use a shovel instead of a pick for whatever you are doing

As the TS is a pick how come it instantly mines dirt then ?

on which blocks is it insta mining dirt, the one u mine or on one of the ones in its expanded breaking range

The blocks in its expanded range. If this could be disabled then it would be perfect as you previously stated its a pick axe so shouldn't be behaving like that

The way things work at the moment, the expanded range blocks do not break blocks as if broken by a tool, it just breaks the blocks.

This would require abit of rewriting so for the moment prob not going to change as its a low priority and its only a minor capability thing.