When I have an active sigil of the green grove, and crops are growing very rapidly, sometimes the crops aren't as grown as they seem. Right clicking on them with empty hand or other non-tool will sometimes revert a crops growth one or more stages.

To test in a new world I got a creative orb, green grove sigil, and a wheat farm. Activate the sigil, and hold right click with empty hand and mouse over all the crops as they grow. Mostly crops which are growing faster then others will revert more often, and after a while they all stop reverting as the "real" growth progress is done.

Tested with 1.1.1 beta 4, forge 1194, and have experienced this behavior in 1.1.0. And not just wheat but most crops as well. Including melons and pumpkins, where the melon and pumpkin blocks themselves will sometimes disappear.

Found the problem. There needs to be a check to make sure that the code is only executed on the server. https://github.com/WayofTime/BloodMagic/blob/master/1.7.10/main/java/WayofTime/alchemicalWizardry/common/items/sigil/SigilOfGrowth.java#L178-210