Xcode 12 beta 落としたけど同じだな。昨日の実験から考えるとあたりまえだけど。

11:31 AM

[UIContextMenuInteraction] Attempting -[UIContextMenuInteraction dismissMenu], when not in an active state. This is a client error most often caused by calling dismiss more than once during a given lifecycle.

実行時の警告は変わった・・・。