>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3584891. --> Reported by: [lauriii](https://www.drupal.org/user/1078742) Related to !918 >>> <h3 id="overview">Overview</h3> <p>When dragging an extension dialog in Canvas, the dialog can sometimes continue following mouse movement even after the mouse button is released. This leaves the dialog in a stuck dragging state and makes normal interaction difficult until the state resets.</p> <p><strong>Steps to reproduce:</strong></p> <ol> <li>Install the "Drupal Canvas Test Extension" module</li> <li>Open the test extension.</li> <li>Press and hold the <strong>right mouse button</strong> on the extension and move the mouse.</li> <li>Release the right mouse button.</li> <li>Move the mouse again. Confirm that the extension did not stop dragging.</li> </ol> <h3 id="proposed-resolution">Proposed resolution</h3> <p>Ensure extension dialogs always stop dragging immediately when pointer/mouse release occurs.</p> <h3 id="ui-changes">User interface changes</h3>