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?

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1 Answer

Potato blocks do not exist. When the potato plant has a bit of yellow at the bottom, you break it to get potatoes.

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