[bug] 512px w/h brokes the image in sdxl_lcm_diffusers_colab.ipynb

[AngelTs]

Only default value (1024) works correct (image = pipe(prompt).images[0]) But brokes picture when try these variants: 1. image = pipe(prompt, height=512, width=512).images[0] 2. image = pipe(prompt, height=512, width=512, num_inference_steps=4, guidance_scale=8.0).images[0] 3. image = pipe(prompt, height=512, width=512, guidance_scale=8.0, num_inference_steps=4, num_images_per_prompt=1, original_inference_steps=50,output_type="pil").images[0]