Problem
.tc-pre is capped at max-height: 240px with its own overflow:auto (chat.css ~line 421). Nesting a scroll region inside the page scroller is awkward on touch — you can trap the scroll and it fights the thread scroll.
Suggested fix
Prefer "show more" expansion over an inner scroll region, or only enable inner scroll when the card is explicitly expanded full-screen.
Filed from a UI research sweep of the Helm mobile app (landing + live demo session) using Playwright + full source review, cross-referenced against Claude, ChatGPT, GitHub Copilot Chat, and Codex/Claude Code UIs.
Problem
.tc-preis capped atmax-height: 240pxwith its ownoverflow:auto(chat.css~line 421). Nesting a scroll region inside the page scroller is awkward on touch — you can trap the scroll and it fights the thread scroll.Suggested fix
Prefer "show more" expansion over an inner scroll region, or only enable inner scroll when the card is explicitly expanded full-screen.
Filed from a UI research sweep of the Helm mobile app (landing + live demo session) using Playwright + full source review, cross-referenced against Claude, ChatGPT, GitHub Copilot Chat, and Codex/Claude Code UIs.