Whenever I use the tunneling enchantment with Silk Touch say two stone blocks, I will be returned with a stone block and a cobblestone block.

This is due to the way the block below gets broken. I'll look into a way to apply enchantments on the break mechanic. Sorry for the inconvenience!

Found a workaround that actually is way better in every way.
I've had a lot of personal business due to uni lately, but now I have time to release a new version including this fix soon :). Please be patient

Fix/ Feature is now out in BetterArcheology 1.2.0!

This issue will be closed. If the problem still persists or similar, feel free to reopen this issue.

Links

Please wait until CurseForge has verified the files and wait for the 1.2.0 :)