Html extension problem with layers

An object (a picture or a button) can’t be one layer up from one html extension inside Lectora. The opposite can be done. I attach an example to understand what I mean. In this Lectora file you will see that everything is ok while the picture in one level down from the html extension. Please try to put the picture one level up from the html extension. After this you will see that the html extension doesn’t appear any more.

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