René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Devtools breaks react-resizable-panels cursor after remount","articleBody":"### TanStack Devtools version\n\n0.10.12\n\n### Framework/Library version\n\nReact 19.2.8\n\n### Describe the bug and the steps to reproduce it\n\nWith TanStack Devtools mounted, remounting a react-resizable-panels Group breaks its hover cursor.\n\nSteps: render Devtools alongside a Group with two Panels and a Separator. Wait for Devtools to load, then change only the Group's `key` and hover the separator.\n\nConfirmed locally in Electron using these minimal components:\n- Initial mount: resize listener runs before Solid; cursor is `ew-resize`.\n- After remount: Solid runs first; hover is detected, but cursor stays `auto`.\n\nSolid's delegated `pointermove` handler leaves `event.currentTarget` pointing to `\u003chtml>` instead of `document`. The resize library then skips cursor styling because `currentTarget.defaultView` is undefined.\n\nRemounting is normal React behavior. Devtools should not change native event properties for unrelated listeners. Is this best addressed here or upstream in Solid?\n\nVersions: @tanstack/react-devtools 0.10.12, solid-js 1.9.15, react-resizable-panels 4.12.3, React 19.2.8, Electron 44.1.0 (macOS).\n\n\n### Your Minimal, Reproducible Example - (Sandbox Highly Recommended)\n\nhttps://stackblitz.com/edit/vitejs-vite-eha3ugdo?file=src%2FApp.tsx,package.json&terminal=dev\n\n### Screenshots or Videos (Optional)\n\n_No response_\n\n### Do you intend to try to help solve this bug with your own PR?\n\nNo, because I do not know how\n\n### Terms & Code of Conduct\n\n- [x] I agree to follow this project's Code of Conduct\n- [x] I understand that if my bug cannot be reliable reproduced in a debuggable environment, it will probably not be fixed and this issue may even be closed.","author":{"url":"https://github.com/alivault","@type":"Person","name":"alivault"},"datePublished":"2026-09-09T22:09:48Z","url":"https://github.com/TanStack/devtools/issues/526"}