Issues

• Physical left/right classes don't mirror in right-to-left text

  vercel/streamdown#642 · Filter by author alexcbrown opened on Sep 30, 2026

• Default rehype-harden config allows images from any origin — enables markdown-image exfiltration in AI chat UIs

  vercel/streamdown#640 · Filter by author orcunbalcilar opened on Sep 30, 2026

• remend htmlTags handler has no math guard: \sum_{j<k} deletes the rest of the message

  vercel/streamdown#616 · Filter by author WHQ25 opened on Sep 10, 2026
  1

• Feature Request: @streamdown/ascii plugin for agent-generated flowcharts & diagrams

  vercel/streamdown#610 · Filter by author sgathrid opened on Sep 3, 2026

• Math block renders as attribute-less, duplicated/garbled DOM only during live token-by-token streaming — Block receives fully correct final markdown

  vercel/streamdown#601 · Filter by author gourangasatapathyvit opened on Aug 28, 2026
  1

• Make tailwind optional

  enhancement
  vercel/streamdown#543 · Filter by author mindplay-dk opened on Jun 25, 2026

• Remend partial markdown can sometimes have FOUM

  bug
  vercel/streamdown#539 · Filter by author Harpush opened on Jun 19, 2026

• Host-integrated Mermaid download and fullscreen hooks

  enhancement
  vercel/streamdown#490 · Filter by author simon5057 opened on Apr 1, 2026

• Fenced code blocks don't render incrementally during streaming

  vercel/streamdown#473 · Filter by author Aventerica89 opened on Mar 21, 2026
  3

• prefix prop does not work - Tailwind scanner cannot detect unprefixed classes in dist files

  bug
  vercel/streamdown#450 · Filter by author shiroyasha9 opened on Mar 10, 2026
  1

• React Native Support?

  enhancement
  vercel/streamdown#76 · Filter by author markwitt1 opened on Sep 2, 2025
  10