Banners displaying assorted textures and blank white

Banners (including those on a pillager captain) tend to display a blank white canvas when viewed from certain angles, distances, and when FOV is changed. Sometimes they display textures from various different blocks and things on the banner. Some textures overlap with others on certain frames. One frame seems like it’s red value is gone and just the green and blue remain (though I’m not sure how colors are rendered in the game). When using the pillager banner specifically, it more frequently displayed the actual pattern when I went too close or too far away from the banner. Also, the random textures stopped appearing when the pillager moved around 20 blocks in another direction.

The banner also was able to change from the pillager pattern to blank white when I was adjusting my FOV in the menu screen.

All banners were affected in the same way when I was in a specific position. They did not change at different intervals from each other.