TYPO3 Core

I have a route enhancer for some get parameters of an extbase list view defined, this works, creating urls like /list/page/2/ or /list/company/some-company/:

  JobListPlugin:
    type: Extbase
    limitToPages:
      - 8
    extension: Example
    plugin: Example
    routes:
      -
        routePath: '/page/{page}'
        _controller: 'Job::list'
        _arguments:
          page: '@widget_0/currentPage'
      -
        routePath: '/company/{company}'
        _controller: 'Job::list'
        _arguments:
          company: 'company'
    defaultController: 'Job::list'
    defaults:
      page: '0'
    requirements:
      page: \d+
    aspects:
      page:
        type: StaticRangeMapper
        start: '1'
        end: '200'
      company:
        type: PersistedAliasMapper
        tableName: tx_example_domain_model_company
        routeFieldName: slug

But there is also a search form leading to this list view with additional get parameters not registered in this route enhancer such as:
https://www.example.com/list/?tx_example_example[__referrer][@vendor]=AEMKA&tx_example_example[dosearch]=1&tx_example_example[jobtypes]=&tx_example_example[employmenttypes]=&tx_example_example[sectors]=&tx_example_example[experiences]=&tx_example_example[searchterm]=&tx_example_example[location]=Deutschland&tx_example_example[submit]=Job+jetzt+finden

This also works, but then the f:widget.paginage widget in the list view template creates bogus urls for all the following pagination pages such as here for page 2, as probably the combination of in the route enhancer registered get parameters as the page parameter and the unregistered ones such as tx_example_example[location] and so on, don't go together:
https://www.example.com/list/page/2/?saa1555a4a98208325a88a7bf356923d=AEMKA&tx_example_example__dosearch=1&tx_example_example__jobtypes=&of1a112ff2be8bffb405d448af530174=&tx_example_example__sectors=&bcd51b65fd43035cd742c1e2550214f3=&o9429d49e5dc14c55b027b1d8e5c07a3=&tx_example_example__location=Deutschland&tx_example_example__submit=Job%20jetzt%20finden

This url then leads to an exception obviously beginning with:

(1/1) #1537633463 OutOfRangeException

Hash not resolvable
in /.../typo3_src-9.5.13/typo3/sysext/core/Classes/Routing/Enhancer/VariableProcessor.php line 71

        if (strlen($hash) < 32) {
            return $hash;
        }
        if (!isset($this->hashes[$hash])) {
            throw new \OutOfRangeException(
                'Hash not resolvable',
                1537633463
            );
        }

at TYPO3\CMS\Core\Routing\Enhancer\VariableProcessor->resolveHash('saa1555a4a98208325a88a7bf356923d')

...

It is the same in 9.5.16, to which I can't update in this project because of another route enhancer issue.