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* [MM-69726] Fix Message actions menu rendering off screen in narrow view In mobile/single-column view the post Message actions menu renders as a full-screen fixed overlay. Because posts live inside the virtualized post list, whose `will-change: transform` establishes a containing block for fixed-position descendants, the overlay anchored to the scrolled post list content instead of the viewport. For longer channels/threads this pushed the menu off screen (to the top of the message pane) so it appeared to do nothing. Portal the mobile Message actions menu to document.body so its fixed overlay is positioned relative to the viewport, and extend the mobile overlay styles to the portaled container. Co-authored-by: mattermost-code <matty-code@mattermost.com> * [MM-69726] Keep portaled Message actions menu open until item click resolves The mobile Message actions menu is portaled to the body, so it lives outside the MenuWrapper node in the DOM. MenuWrapper's capture-phase blur handler treated clicks inside the portaled menu as outside clicks and closed the menu before the item's onClick fired (synchronously under the legacy React root), so selecting an item did nothing. Mark the portal and skip blur-close for clicks inside it. Co-authored-by: mattermost-code <matty-code@mattermost.com> * [MM-69726] Add tests for portaled mobile Message actions menu Cover that the ActionsMenu portals its menu to the body in mobile view and renders inline on desktop, and that MenuWrapper's blur handling keeps a portaled menu open while still closing on genuine outside clicks. Co-authored-by: mattermost-code <matty-code@mattermost.com> * [MM-69726] Add integration coverage for portaled menu item clicks Add a test that clicking an item in the portaled mobile Message actions menu runs its action (the exact behavior the blur-handler fix restored), and a TAB keyboard test mirroring the click-based portal exception. Co-authored-by: mattermost-code <matty-code@mattermost.com> * [MM-69726] Clarify portaled menu item test name Co-authored-by: mattermost-code <matty-code@mattermost.com> * [MM-69726] Fix import order in actions_menu test Co-authored-by: mattermost-code <matty-code@mattermost.com> * [MM-69726] Move portaled-menu blur handling out of generic MenuWrapper Replace the hardcoded [data-menu-portal] selector in MenuWrapper.closeOnBlur with a generic, opt-in portalNodeRef prop. ActionsMenu now owns the portal detail and passes its portal node ref, keeping the generic (deprecated) widget free of consumer-specific conditions. * [MM-69726] Satisfy jsx-max-props-per-line in menu wrapper test --------- Co-authored-by: Cursor Agent <cursoragent@cursor.com> Co-authored-by: mattermost-code <matty-code@mattermost.com>
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