iOS Markdown 编辑器在第二次选中文本时卡死

tannerabread · 2026年七月14日 21:06

嘿 @Ethsim2 我刚刚合并了一个修复此问题的补丁，很快就会可用。

github.com/discourse/discourse

FIX: iOS text selection regression with locked composer (#41711)

main ← fix-ios-text-selection

merged 09:03PM - 14 Jul 26 UTC

tannerabread

+16 -0

PR #41366 introduced a regression on iOS where text-selection gestures in the co…mposer would get canceled. The scroll-lock added there routes composer touchmove events through body-scroll-lock, which calls `preventDefault` at scroll boundaries -- and a short textarea is always at its boundary -- so iOS never got a chance to handle the selection-handle drag. Add a capture-phase touchmove listener on the editor that stops propagation when the editor has a selection, so the event never reaches body-scroll-lock's handlers and iOS handles the gesture natively. [Meta Topic](https://meta.discourse.org/t/ios-markdown-composer-editor-freezes-when-selecting-text-a-second-time/407258)

話題		回覆	觀看
Can't drag to extend a text selection in the composer on iOS/iPadOS 18.x (touchmove selection frozen) Bug ios	5	248	2026年七月14日
Chat Bug on iOS: Can't select text in composer window Bug chat	6	260	2025年一月11日
Drag&select doesn’t work in composer (iPad) Support	2	117	2025年一月23日
iOS 12: Selecting text / quoting not working after using the composer Bug	9	2491	2018年十月8日
Deleting composer content causes it to freeze up Bug composer	2	131	2026年二月23日

iOS Markdown 编辑器在第二次选中文本时卡死

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