copy to clipboard is no longer working

[markkurt]

build the ui-playground panel and open in debug mode.

click the copy to clipboard.

Error:

Uncaught Error: Failed to create Clipboard object. Clipboard access not supported for 3rd party plugins yet. 
    at new e.exports (uxp://uxp-internal/domjs_scripts.js:2)
    at H.get clipboard [as clipboard] (uxp://uxp-internal/domjs_scripts.js:2)
    at EditorPanel_EditorPanel.copyToClipboard (EditorPanel.jsx?297d:37)
    at Object.ba (react-dom.production.min.js?ca5d:14)
    at ja (react-dom.production.min.js?ca5d:14)
    at ka (react-dom.production.min.js?ca5d:14)
    at oa (react-dom.production.min.js?ca5d:15)
    at lc (react-dom.production.min.js?ca5d:52)
    at jc (react-dom.production.min.js?ca5d:51)
    at mc (react-dom.production.min.js?ca5d:52)

[zhuziqingdemao]

Meet same questions🥲