V6 Alpha - Frontend doesn't look good after the story

[OctaMiner]

First of all, thank you so much for the great work. I'm currently using V6 Alpha for my test project in combination with Claude Sonnet CLI. However, I'm having massive problems with the UI/UX frontend. When I use the UI Agent and tell it to create a mockup based on the change, everything looks great and exactly as I envisioned it. But when it gets to the point in the epic where it assembles the frontend from the previously developed backend, it looks like an HTML page from 1995 and nothing like it looked in the mockup. Most importantly, when creating from the epic, it forgets to use the UI defaults defined in the flow regarding color and font. Does anyone have any idea what I'm doing wrong? I'm following the epic stories step by step, and whenever there are changes in direction, I always update everything – architecture, PRD, sprint status, etc.