Mod Version 1.5.4-1.18 - this just started happening. No matter what keybind configuration I set, either in the keybind section of MC or from Mod menu, I can't disable vein mining. What I mean is that vein mining is always active as if I'm holding the activation key / mouse button. Because of this behavior shape mining isn't working either because vein mining seems to be taking precedent. The only way that I've found to stop this behavior is from Mod Menu and disabling it all together. None of the keybinds work, ie. vein mining or shape, it always vein mines. I have: 1) reset the config files (deleted them so they will be recreated) 2) Tried logging out and back in and 2) Restarted the game -- No change. Same behavior in multiplayer and a single player test world.

I see there's been a couple updates since 1.5.4. Same behavior in 1.5.6.

Partial config.json5:

{
	// Mod enabled or disabled
	"enabled": true,
	// Activation key
	"keybinding": "key.keyboard.unknown",
	// Inverts the keybinding activation
	"invertActivation": false,

The key.keyboard.unknown is odd to me. Maybe this?

So some more troubleshooting here. It appears that you have to have a keybind set for excavate and shape or it will always vein mine. strange indeed.