When using the latest versions of both EMF and ETF, the banner patterns Rune 1 through 9 appear invisible as shown below.

Invisible banner patterns in a loom.

Invisible 'Rune 9' pattern on a banner block while EMF & ETF are present.

The same 'Rune 9' banner pattern if both mods are removed.

Fabric API, Bookshelf, Runelic, EMF and ETF were the only mods used while verifying this issue.

This mod is adding new banner patterns in the standard way and does not have any special rendering code that could mess up. I am guessing the issue is in EMF directly. I am closing this issue to centralize discussion on their issue tracker. If they do uncover some way this can be fixed on my end this issue report can be updated. Traben-0/Entity_Model_Features#163