When I select / touch banners I am seeing the piglin snout pattern on them. To be specific, I was in creative mode, and got the banners from the creative inventory.

When I just look at the banners, they seem like normal blank banners. When I select them by tapping on them I see a semi transparent (in the same color as the main banner) piglin snout pattern on them.

A screenshot of what it looks like is attached to this issue.