When a wolf is on top of leaf litter it will not accept bones from the player.
steps to reproduce:
start a new Minecraft world on bedrock edition
place down a large patch of leaf litter and spawn a wolf on it
try to tame the wolf with bones
The expected result is that the wolf would accept the bones and be able to be tamed, but that doesn’t happen
I am not able to reproduce this. Could you attach a video of the issue?