On spice worlds, spice veins don't seem to work properly anymore. Rather than growing an increasingly large ring of spice around itself, every spice vein I've seen so far will only create spice in a maximum of three adjacent tiles, with spice simply failing to appear in any other spot. After poking around some unloaded segments, I realized that spice still spawns at normal rates, but because much of the time the three available spaces are already filled, the newly-spawned spice and existing spice deposits will cancel each other out. In the game editor, none of the data values seem to be off, so I'm guessing the issue has to do with how the game internally calculates spread.
Boat enjoyer