self = <arcade.texture_atlas.atlas_default.DefaultTextureAtlas object at 0x7f48583ed570>
image_data = <ImageData width=1024, height=600, hash=ee8ea5d6ce2ceee8d128117e02145a5ae110bbd600e7514fc2110cb8d0c517b9>

    def _allocate_image(self, image_data: "ImageData") -> tuple[int, int, int, AtlasRegion]:
        """
        Attempts to allocate space for an image in the atlas or
        update the existing space for the image.
    
        This doesn't write the texture to the atlas texture itself.
        It only allocates space.
    
        Returns:
            The x, y texture_id, TextureRegion
        """
        image = image_data.image
    
        # Allocate space for texture
        try:
            x, y = self._allocator.alloc(
                image.width + self._border * 2,
                image.height + self._border * 2,
            )
        except AllocatorException:
>           raise AllocatorException(
                f"No more space for image {image_data.hash} size={image.size}. "
                f"Curr size: {self._size}. "
                f"Max size: {self._max_size}"
            )
E           pyglet.image.atlas.AllocatorException: No more space for image ee8ea5d6ce2ceee8d128117e02145a5ae110bbd600e7514fc2110cb8d0c517b9 size=(1024, 600). Curr size: (1024, 1024). Max size: (16[384](https://github.com/pythonarcade/arcade/actions/runs/10076937039/job/27858346245?pr=2309#step:6:385), 16384)

self = <arcade.texture_atlas.atlas_default.DefaultTextureAtlas object at 0x7f48583ed570>

    @property
    def unique_textures(self) -> list[Texture]:
        """
        All unique textures in the atlas.
    
        These are textures using an image with the same hash
        and the same vertex order. The full list of all textures
        can be found in :py:meth:`textures`.
        """
        # Grab the first texture from each set
        textures: list[Texture] = []
>       for tex_set in self._unique_textures.values():
E       RuntimeError: dictionary changed size during iteration