Nested AND conditiongroups break facet results

Setup

• Solr version: 9.6.1
• Drupal Core version: 10.3.6
• Search API version: 8.x-1.35
• Search API Solr version: 4.3.5
• Configured Solr Connector: Solr Cloud with Basic Auth

Issue

When creating facets as block (both using 2.x and 3.x facets), there is only 1 conditiongroup in the query, which works as expected.

When creating facets as exposed filters, Views adds an extra nested AND conditiongroup.
This causes wrong active facets and facetcounts.

I debugged this in "src/Plugin/search_api/backend/SearchApiSolrBackend.php"

Here is an example of what happens when there are 2 facets, which both have 1 item active.
I created the exact same setup both with Facets Blocks, and Facets Exposed Filters

Facets as a block (works as expected)

ConditionGroup structure:

Filter_Queries output:

Facets Exposed Filters (wrong active facets and facet counts)

ConditionGroup structure:

Filter_Queries output:

It looks like either "reduceFilterQueries" is the culprit, or Solarium needs to handle the 2nd query better...