When using tools with overgrowth that take a long time to break blocks (Broad Tools) whenever overgrowth adds to the overslime it interrupts the mining action, this is not dealbreaking but is quite annoying. I haven't found any mention of this on a quick google search

It's an issue with Hephaestus, not specific to this pack.

And as such, can't be fixed by us. The 1.18.2 Hephaestus version is unsupported.

Sorry.