allow-create=false calls /solr/admin/collections when registering a mixed index (Kerberos 403)

[carlostechinnovation]

Environment:

• JanusGraph 1.1.0
• Solr 8.11.3 (Cloudera CDH, SolrCloud + Kerberos)
• HBase storage backend
• JDK 17

Configuration:

propertiesindex.search.backend=solr
index.search.solr.mode=cloud
index.search.solr.kerberos-enabled=true
index.search.solr.allow-create=false
index.search.solr.collection=mycollection

Problem:

When calling buildMixedIndex("search") in a Groovy script via gremlin.sh, JanusGraph always calls /solr/admin/collections regardless of allow-create=false.
My collection already exists in Solr.
My user in Kerberos does not have admin permissions on that endpoint.

The result is HTTP 403:

org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: 
Error from server at http://solr-host:8983/solr: 
HTTP ERROR 403 Unauthorized request
URI: /solr/admin/collections

Stacktrace shows:

at org.janusgraph.diskstorage.solr.SolrIndex.createCollectionIfNotExists(SolrIndex.java:1332)
at org.janusgraph.diskstorage.solr.SolrIndex.register(SolrIndex.java:387)
at org.janusgraph.graphdb.database.management.ManagementSystem$IndexBuilder.buildMixedIndex

Question:

Is there a way to skip the /solr/admin/collections check entirely when the collection already exists and allow-create=false is set?
We expected that allow-create=false would prevent any call to the Solr admin API, but it seems createCollectionIfNotExists is still invoked unconditionally from register.
Is this intended behavior? Is there a workaround or configuration option we are missing?