Minecraft 1.12 – Automatic crops farm Pressure plate issues

I built an automatic potatoes farm but the potato block that is supposed to be popping out on stone pressure plate activate isnt popping out even thou the light level is 8 block 7 light.

Here is a screenshot of the debug menu, in 1.9 it used to work.

I've made sure the light is below 9, I tried replanting the crop and I tried using different pressure plates still no effect.

Any idea why it doesn't work in 1.12?