[TYPO3-Solr] Search-Form Action Sheme

[Andreas Thurnheer-Meier]

I have a simple question:

How can I generate the url in the Search-Form-Action with https:// instead of http:// ?

I have installed the latest version of TYPO3-Solr (7.5.0). The entire TYPO3 installation runs via https: //domain.tld

- Forwarding to https:// in .htaccess
- config.absRefPrefix = https://domain.tld

When I output the search form the action URL is always without http://

<form method="get" id="tx-solr-search-form-pi-results" action="http://domain.tld“ … >

I used the Standard-Viewhelper from the extension:

<s:searchForm id="tx-solr-search-form-pi-results" additionalFilters="{additionalFilters}">
…
</s:searchForm>
Is there a setting in TYPOScript or in the fluid template where I can influence that?
Thank for any help.
Andreas