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on drop stuck until mouse movement on Mac sometimes #5391

@tdomhan

Description

@tdomhan
Screen.Recording.2026-03-19.at.22.09.21.-.with.mouse.click.mov

Problem

In a minimal Dioxus drag-and-drop repro on macOS desktop, dropping onto a floating drop target sometimes gets stuck after mouse release.

The visible behavior is:

  • the native drag ghost remains visible after releasing the mouse button
  • the drop handler is not called immediately
  • the drop only completes after moving the mouse again

I can reproduce this in the desktop app/webview path, including when the drop target is created entirely in JavaScript during dragstart (instead of using Dioxus' event handlers). I cannot reproduce the same behavior when running the same repro via the web platform in Safari.

Repro repository:
https://github.com/tdomhan/dioxus_playground/tree/main

Steps To Reproduce

Steps to reproduce the behavior:

  • Clone the repro repository: https://github.com/tdomhan/dioxus_playground/tree/main
  • Run the app with dx serve --platform desktop on macOS.
  • Start dragging the floating add button in the bottom-right corner toward the floating drop target in the bottom-left corner.
  • Release the mouse while over the drop target. Sometimes the drag ghost remains stuck and the drop event is only delivered after moving the mouse again.

Additional notes:

  • The repro also has a toggle to use a JS-created drop target instead of the Rust-rendered one. The issue still reproduces there.
  • Running the same repro with dx serve --platform web in Safari does not reproduce the issue.

Expected behavior

Releasing the mouse over the drop target should immediately complete the drop, remove the drag ghost, and fire the drop handler without requiring any additional mouse movement.

Screenshots

Videos attached:

  • Screen Recording 2026-03-19 at 22.00.31 - original.mp4
    Original longer desktop recording showing the issue.
  • Screen Recording 2026-03-19 at 22.01.55 - js drop target.mp4
    Same issue with the JS-created drop target enabled.
  • Screen Recording 2026-03-19 at 22.04.32 - web.mp4
    Same repro running in Safari via the web platform; does not show the issue.
  • Screen Recording 2026-03-19 at 22.09.21 - with mouse click.mov
    Shorter desktop recording showing the problem, with mouse clicks visible.

Environment:

  • Dioxus version: 0.7.3
  • Rust version: rustc 1.95.0-nightly (0a3cd3b6b 2026-01-18)
  • OS info: macOS (Darwin 25.0.0)
  • App platform: desktop

Control case:

  • web platform in Safari on the same machine does not reproduce the issue. So not sure if this is just webview/wry related or how to further investigate the problem.

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