Impossible to select an object element in some cases

[Reinmar]

The case is #1331.

It should be possible to make such a selection:

<div>[<div></div>]</div>

because div is marked as isObject (all objects are selectable).

However, that does not work. The reason why it works in the demo I created in that ticket is because I accidentally added:

	editor.model.schema.extend( '$text', {
		allowIn: 'div'
	} );

Which made this scenario fall into "selection is allowed in text" case.

[jodator]

Might be fixed by: ckeditor/ckeditor5-engine#1608. I'll check this.

[jodator]

Yes. It does. ckeditor/ckeditor5-engine@1d54e74