Sneaking and right-clicking with the infinity drill does not change its mining area. I have 80+ MRF stored in it (rare tier) and am unable to change the mining area from 1 block, which is odd because the maximum size shown is 7x7x1. I tried holding right click and pressing it once (while sneaking and not sneaking), but nothing changed.

Minecraft version: 1.12.2
Forge version: 14.23.5.2796
Industrial Foregoing version: 1.12.2-1.12.3-227
TeslaCoreLib version: 1.12.2-1.0.15

Can't replicate make sure you dont have anything in your offhand

Should this Issue be reopened, or a new one made, as the cause of this issue has been identified as being caused by turning shaders on.

I was having this issue myself and I was running with shaders turned on. Another player on Discord was using a different set of shaders than I was, but said the problem was not occurring on a laptop they owned and the only difference was their pc had been using shaders. Loading up a fresh world I made sure the issue was occuring, and then disabled shaders . The drill started changing modes with shift right clicking at this point.

Can confirm, I get this issue when I have BSL shaders active, but if I switch shaders to off I can change modes as expected.

If shaders are causing the issue, optifine isn't supported by us so report it to them.