Tecnoblog の Discourse コメントに関する体験

Falco · 2026 年 4 月 16 日午後 5:35

テストいただきありがとうございます。問題が見つかりました

github.com/discourse/discourse

FIX: Use iframe style.height for embed resize messages (#39321)

main ← fix/embed-dynamic-height-inline-style

opened 05:34PM - 16 Apr 26 UTC

xfalcox

+1 -1

## Summary When Discourse is loaded in full app embed mode with `dynamicHeight:… true`, the iframe was not resizing in production despite `discourse-resize` messages arriving correctly. The full app path sets `iframe.style.height` as an inline style for the initial height. Inline styles always win over the `height` HTML attribute, so our resize handler — which set `iframe.height = ...` — had no visible effect. This changes the resize handler to set `iframe.style.height` so it actually overrides the inline style. This also works for the standard (non-full-app) embed path since no inline style is set there initially. ## Test plan - [ ] Full app embed with `dynamicHeight: true` — verify iframe height updates as content loads - [ ] Standard (non-full-app) embed — verify iframe still resizes correctly - [ ] CSS `max-height` on the iframe still wins (inline `height` doesn't override `max-height`)

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