When nesting the stub:item tag in other tags in a stub:itemframe, the id param does not get populated into nested stub:item instances:
<stub:form send-to-page="shop">
<stub:itemframe id="shopData">
<stub:item name="id" type="text"/>
<stub:item name="title" type="text"/>
<stub:item name="url" type="text"/>
<ixsl:if test="/document/shopData/shop/@id">
<stub:item name="status" type="select">
<stub:option value="enabled">Aktiviert</stub:option>
<stub:option value="disabled">Deaktiviert</stub:option>
</stub:item>
</ixsl:if>
<stub:item name="action" type="submit" value="Speichern"/>
</stub:itemframe>
</stub:form>
When the xsl template for <stub:item name="status" type="select"> is applied, the id param is not set anymore, resulting in a failing include because for the label the include part _status is searched instead of shopData.status.