Some of my banners in one of my worlds glitches either when viewed or when I place them the banner. the glitch looks like a view of some Minecraft creative inventory list.
Environment
I don't know if this is due to this being an older world, but this is the world I primarily play in, so I haven't seen this in other worlds
Hmm.. This seems to be a texture glitch bug with the texture map. Do you have any resource packs or mods on?