You can now craft banner patterns with a piece of paper to duplicate the banner pattern.

This was removed with more renewability recipes for banner patterns, such as the piglin banner pattern recipe.

It was also removed as the feature became very janky when having non-stackable outputs in the crafting output.

History

1.3.4X

Mojang broke this feature.

Not too bad of a one to break, as the crafting result was slightly janky as well (unstackables stacking in a strange manner)

I’m going to find better ways to renew banner patterns in the future.

1.1.0Beta 6+

You can now duplicate banner patterns by combining them with a piece of paper in the crafting table

This effectively makes enchanted golden apple banner patterns partially renewable, but you still need an initial enchanted golden apple