Editor crashes after pasting image to the caption

[Mgsy]

Are you reporting a feature request or a bug?

Bug

Provide detailed reproduction steps (if any)

1. Open the sample with Easy Image plugin and two images - one with the caption and second without the caption.
2. Copy the image without the caption.
3. Focus some caption.
4. Paste the image.

Expected result

The image is pasted properly.

Actual result

Editor crashes

Other details

Notes

This bug occurs only if you paste the image without the caption.

Error

plugin.js:2858 Uncaught TypeError: Cannot read property 'editables' of undefined
    at plugin.js:2858
    at CKEDITOR.htmlParser.element.forEach (fragment.js:622)
    at CKEDITOR.htmlParser.element.forEach (fragment.js:636)
    at CKEDITOR.htmlParser.element.forEach (fragment.js:636)
    at CKEDITOR.htmlParser.element.forEach (fragment.js:636)
    at Editor.<anonymous> (plugin.js:2813)
    at Editor.listenerFirer (event.js:144)
    at Editor.CKEDITOR.event.fire (event.js:290)
    at Editor.CKEDITOR.editor.fire (editor_basic.js:24)
    at CKEDITOR.htmlDataProcessor.toDataFormat (htmldataprocessor.js:294)

GIF

• Browser: All browsers
• OS: All platforms

[Comandeer]

Already reported as upstream issue #1469.