Editor UI improvement - Border on inline links

The inline links that can be inserted in a text field have a UI that makes it hard to identify blank spaces:

The links do get a border around them when hovering, but still, it’s very easy to miss where it starts or ends.

I’ve solved it for myself by using the Stylebot chrome extension, adding the following style:

.SlateInput__leaf-inline-item  {
 background-color:#f9f9f9;
 outline: .5px solid #eee;
}

Which results in:

But it would be great for non-developers of my team to have it without doing this.