Fences and walls can no longer be placed in invalid block states by using /setblock or /fill

The bug

Fence and walls can no longer be manually controlled and are always forced to default values:
/setblock ~ ~ ~ minecraft:oak_fence[east=false,north=false,south=false,waterlogged=false,west=true] no longer forces a block with a custom nbt and is always set as false when summoned around air blocks.

The introduction of this occurred in 1.16 Pre-Release 6, the functionality worked up to and including 1.16 Pre-Release 5.