Glow Lichen mining speed is not affected by efficiency

The Bug

When glow lichen is mined by efficiency shears it doesn't mine them any faster than normal shears

How to reproduce

1. place 2 glow lichen
2. mine 1 with unenchanted shears
3. mine 1 with efficiency 5 shears
4.  Notice how the efficiency shears mine it at the same speed as the unenchanted ones