The issue is related to the presence of wrapping divs.
The same content without wrapping divs (see below) works correctly even when headings numbering is activated.
{{figure type="figure"}} {{figureCaption}} {{id name="F1"/}}Beautiful Image {{/figureCaption}} XXX {{/figure}} {{figure type="figure"}} {{figureCaption}} {{id name="F2"/}}Even More Beautiful Image {{/figureCaption}} YYY {{/figure}}
