1.15.2-1.12.13
The Different Angles perk does not make pickaxes mine some wooden blocks faster.
Blocks affected:
-All wooden slabs
-All wooden stairs
-All fences
-All fence gates
-Crafting table
-All signs
-All wooden trapdoors
-All wooden doors
-Barrel
and probably some more

Duplicate: #1483

They both stem from the same issue

This bug is about different angles not working at all on some wooden blocks, while 1483 is about haste not affecting different angles.