Load the following HTML into VE standalone:
<p>Hello</p> <figure><img src="VisualEditor-logo.svg" width="641" height="225" alt="VE logo"><figcaption>VE logo</figcaption></figure> <p>world</p>
Cursor through the document from left to right. The image is skipped: the cursor goes straight from Hello| to |world. If you cursor back from right to left, the image is not skipped. The same thing happens with up/down arrow: down arrow skips the image, but up arrow doesn't.
This also happens in VE-MW with MWBlockImage nodes.