Minecraft wiki entry for Missing_textures_and_models, associated text: From 14w25a up to 19w38b, there existed a remarkable visual bug where missing models associated with blocks that used translucent rendering would interact anomalously with the rendering of transparent blocks in the world, as well as of entities, including the holder. Unlike normal missing models, translucent blocks and other entities would render in front of such a model when held, even if they were physically farther away from the camera. However, this only applies if the distant entity or transparent block in question is not first occluded by the player model. As a result, the held translucent block can form a player-shaped silhouette around the player model in front of a background made of entities (such as paintings) or translucent blocks.