I also have run into this: attempting to dispense bone meal on to a grass block will crash the game [win 10 1.14.1]
The screenshot from the report is a dispenser facing up into a grass block.
carrots and potatoes do not work. Beet and Wheat farmers will farm regardless of their inventory states. Carrot farmers will harvest for a while and then stop permanently. Potato farmers will never farm. And neither type of farmer will share with a nearby villager this is all in win 10 (1.11 and now in 1.12).
I have noticed that pillagers can spawn cave systems bellow a village causing them to be mostly inaccessible which is just annoying.