Doesn't reliably dig trees

[rubenwardy]

Here's an example:

[HybridDog]

The apple trees look different in mgv6 and other mapgens, so the trees are registered differently: trees.lua

Did you use mapgen which is not "v6", does the tree consist of default nodes, and did the treecapitator sound play (if it did, the neighbour detection probably worked wrongly)?