Strangely, upon finally updating to the latest version of 2DTK, and adding tilemaps with multiple materials (for animation), I'm coming across an issue where Unity is constantly 'Importing Small Assets' whenever I'm dealing with scenes that contain tilemaps. I'm not sure if it's just a coincidence or not; but I'm not quite sure what else could be causing it to reimport assets so often. Could tilemaps with multiple materials be causing this behavior?