TYPO3 Core

<f:form name="test">
    <f:form.hidden name="test" value="1" />
    <f:form.button >Send</f:form.button>
</f:form>

I get something like this

<input type="hidden" name="...[__referrer][@request]" value="{"@extension":"...","@controller":"...","@action":"..."}bce..." />
<input type="hidden" name="...[__trustedProperties]" value="{"test":1}b3b..." />

Instead of (Indexedsearch)

<input type="hidden" name="tx_indexedsearch_pi2[__referrer][@request]" value="{&quot;@extension&quot;:&quot;IndexedSearch&quot;..." />
<input type="hidden" name="tx_indexedsearch_pi2[__trustedProperties]" value="{&quot;search&quot;:{&quot;_sections&quot;:1,&quot;_freeIndexUid&quot;..." />