When mining with the mining gadget you are unable to mine activated redstone.
This only applies when standing close enough to activate the redstone. If you have enough range the mining gadget will mine it but when you are standing to close you will activate the redstone instead of mining it.
Found this in enigmatica 5 modpack.

Is this for 1.14?

The issue is in 1.15, Enigmatica 5 is a 1.15 modpack. I have also encounted the issue

It was in 1.15. Also opened an issue with the enigmatica 5 pack.
EnigmaticaModpacks/Enigmatica5#155

This shouldn't been an issue, hmm, what mod version?

The version where I have the issue is in 1.3.1

We're on 1.3.5 now https://github.com/Direwolf20-MC/MiningGadgets/blob/master/CHANGELOG.md#1152-135---2020-03-29 which I've fixed the redstone issue