[Bug] EditorBlock with other element have contentEditable = false

[anvotrinh]

I create a custom block, and use this with an element have attr contentEditable = false. when selectall text (ctrl + A) --> selector point to wrong position.

<div>
    <EditorBlock {...props} />
    <span
      contentEditable={false}
    >
      sometext
    </span>
</div>

You can try it, create some blockquote and use ctrl + A https://jsfiddle.net/anvotrinh/77nyz190/1/

[Dakuan]

I'm also running into this, another js fiddle: https://jsfiddle.net/f144k3j0/

If you press the insert span button, hello and a space gets inserted. Remove that space and the caret goes to the far right. Here is a gif of my personal use case: