Issue with Realms causing banner patterns to not display on shields

Banners applied to shields don't display when in use. The icon is unaffected.

TO PRODUCE:

1. Enter a Realms server.
2. Create a banner, pattern does not matter.
3. Apply the banner to a shield.
4. Check to see if the banner pattern displays. If it does, the bug is not present. If it does not, the bug is present.

EDIT: RESOLVED
Issues caused by resource packs.