Are you using a 'keep-loaded' portal chucker?
Still in pre2, also affects redstone
Still an issue in 32d. Activating a lever on the top of an upside down slab breaks the lever.
Vid of the peony flash on double tall grass breaking.
Me too. I am using a custom resource pack, whereas the OP was vanilla, and I am on Windoze.
Its a mechanism you can construct.