Transformation fails when the reference macro is used inside a wiki macro which does not use {{wikimacrocontent}}

2019-08-29 15:14:51,784 [http://localhost:8080/xwiki/bin/view/Modellvalidierung/Bericht/OpRisk/?Report=Report] ERROR t.DefaultTransformationManager - Failed to execute transformation
java.lang.ClassCastException: org.xwiki.rendering.block.TableCellBlock cannot be cast to org.xwiki.rendering.block.MacroMarkerBlock
                at org.xwiki.contrib.numberedreferences.internal.AbstractNumberedTransformation.replaceReferenceBlocks(AbstractNumberedTransformation.java:65)
                at org.xwiki.contrib.numberedreferences.internal.NumberedHeadingsTransformation.transform(NumberedHeadingsTransformation.java:123)
                at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
                at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:101)