minecraft:cave_vine and minecraft:cave_vine_in_moss from /place always claim to succeed, even when they don't

The Bug

When using the /place feature command to place the minecraft:cave_vine feature, it fails to load if air is not present below the target location, but still shows up as successful.

Features Affected

• minecraft:cave_vine

Reproduce

• Do /place feature minecraft:cave_vine ~ ~ ~

Observed Result

The game said it was loaded but nothing appeared.

Expected Result

The feature would be properly placed or the error message "Failed to place feature" would come up.