Lack of visual hierarchy. Lots of use of bold text to make numbers stand out, without bolding the corresponding labels. Reliance on heavily-saturated primary colors. Limited attention paid to alignment.
LLMs in general are pretty terrible at spatial arrangement. You should see some of the architects' critiques of AI-generated floorplans that are on YouTube; the LLM generates a layout that is just nuts. I've found them largely useless at putting together UI mocks; Figma or Photoshop is still way easier to work with if you just want to cut up UI elements and rearrange them.
LLMs in general are pretty terrible at spatial arrangement. You should see some of the architects' critiques of AI-generated floorplans that are on YouTube; the LLM generates a layout that is just nuts. I've found them largely useless at putting together UI mocks; Figma or Photoshop is still way easier to work with if you just want to cut up UI elements and rearrange them.