Félix Malfait
198ffbb6bd
## Summary Follow-up to the Sentry error [TWENTY-FRONT-HJ8](https://twenty-v7.sentry.io/issues/TWENTY-FRONT-HJ8) (`Cannot start a drag operation without a drag source`), seen on a dashboard page and discussed in #23752. A pointer drag only activates once the pointer travels past the activation constraints (distance/delay). dnd-kit's `PointerSensor` captures the pressed draggable on pointerdown, and when the constraint is satisfied it starts the drag by resolving that draggable's id in the registry. If a re-render unregistered it in between, the lookup fails and `manager.actions.start()` throws. That window is real in our UI: virtualized table rows remount under new per-instance sortable ids, and widgets/tabs remount while a page loads. The breadcrumbs of the Sentry event show the gesture straddling a navigation onto a loading dashboard, with the error firing on the activating `pointermove` 190ms later. ## Fix `PointerSensorWithSourceGuard` extends `PointerSensor` and checks the registry before starting: if the pressed draggable is gone, it cancels the gesture through the sensor's own cancel path (same one dnd-kit wires to activation aborts) instead of throwing. There is nothing left to drag at that point, so cancel is the correct outcome. `DND_KIT_SENSORS` now uses it, which covers every dnd surface. Unit tests pin the behavior with real dnd-kit internals: the base sensor throws in this scenario (documents why the guard exists, and breaks if upstream fixes it so we can remove the subclass), the guard cancels and leaves the operation idle, and a still-registered source starts normally. Fixes TWENTY-FRONT-HJ8 <!-- This is an auto-generated description by cubic. --> <a href="https://cubic.dev/pr/twentyhq/twenty/pull/23816?utm_source=github" target="_blank" rel="noopener noreferrer" data-no-image-dialog="true"><picture><source media="(prefers-color-scheme: dark)" srcset="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"><source media="(prefers-color-scheme: light)" srcset="https://www.cubic.dev/buttons/review-in-cubic-light.svg"><img alt="Review in cubic" src="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"></picture></a> <!-- End of auto-generated description by cubic. -->
The #1 Open-Source CRM
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Why Twenty
Twenty gives technical teams the building blocks for a custom CRM that meets complex business needs and quickly adapts as the business evolves. Twenty is the CRM you build, ship, and version like the rest of your stack.
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Installation
Cloud
The fastest way to get started. Sign up at twenty.com and spin up a workspace in under a minute, with no infrastructure to manage and always up to date.
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Scaffold a new app with the Twenty CLI:
npx create-twenty-app my-app
Define objects, fields, and views as code:
import { defineObject, FieldType } from 'twenty-sdk/define';
export default defineObject({
nameSingular: 'deal',
namePlural: 'deals',
labelSingular: 'Deal',
labelPlural: 'Deals',
fields: [
{ name: 'name', label: 'Name', type: FieldType.TEXT },
{ name: 'amount', label: 'Amount', type: FieldType.CURRENCY },
{ name: 'closeDate', label: 'Close Date', type: FieldType.DATE_TIME },
],
});
Then ship it to your workspace:
npx twenty app:publish --private
See the app development guide for objects, views, agents, and logic functions.
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Run Twenty on your own infrastructure with Docker Compose, or contribute locally via the local setup guide.
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Twenty gives you the building blocks of a modern CRM (objects, views, workflows, and agents) and lets you extend them as code. Here's a tour of what's in the box.
Want to go deeper? Read the 
User Guide for product walkthroughs, or the Documentation for developer reference.
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TypeScript
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