This is super strange error.
HT's TreeChop + Multi Mine works perfect with all tree mods, vanilla trees , but then we try to harvest Regions Unexplored tree, HT's TreeChop doesn't do anything. Chopping process doesn't starts and log breaks as in vanilla. Without Multi Mine works perfect.

[compatibility]
	#Fixes bad behavior
	multiMine = true

Compatibility is enabled by default in HT's TreeChop config. But I tried to disable it, haven't helped, just added some new bugs.
hammertater/treechop#228

Tried to reproduce with clear installation. It just doesn't work at all for all trees.
Looked cfg diff.
all vanilla and bop logs were in "bannedBlocks":, so it worked only for them.
I will add Regions Unexplored logs to blacklist and it should fix it.