火狐浏览器，输入异常，无法删除，mac和window都会出现

bug description

Firefox browser, input exception, cannot be deleted, must be present on both mac and window, and the console reports an error: Uncaught (in promise) TypeError: can't access property "removeChild", node is null Uncaught Error: Cannot resolve a DOM point from Slate point: {"path":[0,0],"offset":0}