In 2026, Figma Make, v0, and Lovable all restored the visual sliders and properties panels that prompt-based tools were supposed to make obsolete. But by the vendors’ own account, dragging a slider now serializes the edit and hands it to the AI model as a more precise instruction — the model rewrites the file, rather than the panel touching it directly. A May 2026 complaint on Vercel’s community forum shows the failure mode: one user’s visual edits landed on the wrong React components once the round trip stopped being a direct edit.
The episode also works through what the research says these panels still lack: a UX study found professionals preferred conversational output over structured input despite the latter’s transparency, while a research prototype called LegoUI that logs a visible decision trail tested well on transparency and control. No study has run a shipped properties panel against a decision log head-to-head, so the hosts hold that comparison loosely, as a mechanism-level inference rather than a measured result.