Problems linking image in layout section with 2 cells

Summary

Editing Image in page in Firefox (not version related), where image is in one cell of 2 cell layout will cause image link to have 2 fields in advanced section, as per .

Environment

Firefox 53 (but tested also on 45)

Steps to Reproduce

Create Blank page
Add this code to storage format:

<ac:layout>
    <ac:layout-section ac:type="two_equal">
        <ac:layout-cell>
            <p>123</p>
        </ac:layout-cell>
        <ac:layout-cell>
            <p>
                <ac:image ac:height="250">
                    <ri:attachment ri:filename="panda.jpeg"/>
                </ac:image>
            </p>
        </ac:layout-cell>
    </ac:layout-section>
</ac:layout>

Expected Results

Clicking on image, then link will show advanced section with only one feald - link as per

Actual Results

Same as on this image

Notes

Behavior is not pretend in latest 6.1.1.

Workaround

Upgrade to latest confluence version, or use images with link without layout section.