"Attach a file" option unresponsive in desktop Safari

zogstrip · January 29, 2026, 9:49am

Unfortunately the fix broke the “options” in that list that opened a modal…

github.com/discourse/discourse

FIX: Modal-based chat composer buttons not working on mobile

main ← fix/chat-composer-dropdown-mobile-modals

merged 10:20AM - 29 Jan 26 UTC

ZogStriP

+10 -3

Commit 9cbb0c3da3 fixed Safari file uploads by removing async/await from the but…ton click handler, but this introduced a regression: modal-based buttons (like "Insert date/time") stopped working on mobile. The issue is a race condition where the modal tries to open while the dropdown menu modal is still closing, causing the new modal to be dismissed immediately. This fix introduces a `synchronous` property for chat composer buttons: - `synchronous: true` - action runs immediately without awaiting the menu close (required for file inputs on Safari) - `synchronous: false` (default) - awaits menu close before running action (required for modal-based buttons) The upload button is marked with `synchronous: true` to preserve the Safari fix, while all other buttons use the default async behavior.

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"Attach a file" option unresponsive in desktop Safari

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