the cave noise settings seem to be 3d again like temperature also leading to funny areas

under ground to blank out even if biomes are set to fill world 

found it only does it with cave biomes removed them worked as expected

the very bottom of world -55 or 60 reverts to top biome 

note i first seen it changing dripstone caves to temp -2 to 0 and lush caves to temp 0 to 2

seed is 8098563936862952482 and cords 1319 71 -1487

done it with all values still the same

cant provide more info