Block product summary space rendered twice

[SpanacheNarcis]

Describe the bug
I used the block "product-summary-space in shelf but it was rendered twice and the second spacer rendered in DOM has the content of the next block declared under the product-summary-space. The issue is that at some point there will be one block, rendered twice.

Expected behavior
The block should render a spacer to make the height equally in all shelves and not duplicate the next declared blocks

Screenshots