I'm not 100% if that's a bug or not, but, when I remove a block with the Universal Block Remover, it sounds just like I had mined two blocks instead of one, which sometimes makes me think for a split second that I just unintendedly right clicked one more time.
It's not a big deal though, but I just wanted to report every bug I could find no matter how small or unimportant it could be to help make the mod a bit better.
Tried for MC 1.12.2.