geotools wfs-ng thread safety and strange behaviour problem

Question

I'm having a big trouble using geotools wfs-ng datastore plugin together with geoserver instance (geoserver is not a problem here, it's just a wfs implementation and provider of the data). Use case seems plain:

• custom web service that is sort of proxy to underlying wfs
• create wfs data store while my web service application starts:

final URL wfsUrl = new URL(url);
final WFSConfig wfsConfig = WFSConfig.fromParams(Map.of(
    WFSDataAccessFactory.AXIS_ORDER.key, WFSDataAccessFactory.AXIS_ORDER_EAST_NORTH));
final SimpleHttpClient httpClient = new SimpleHttpClient();
return new WFSDataStore(new WFSClient(wfsUrl, httpClient, wfsConfig));

• reuse it on consecutive custom api calls to proxy underlying wfs, many of below calls are being done in multiple threads

final SimpleFeatureSource eventsSource = dataStore.getFeatureSource(typeName);
final String geometryColumn = dataStore.getSchema(typeName).getGeometryDescriptor().getLocalName();
final Filter filter = filterOf(parameters, geometryColumn);
final SimpleFeatureCollection eventsFeatures = eventsSource.getFeatures(new Query(typeName, filter));
final SimpleFeatureIterator features = eventsFeatures.features();
try {
    while (features.hasNext()) {
        final SimpleFeature next = features.next();
        //do something
    }
} finally {
    features.close();
}

tried version of geotools wfs-ng datastore plugin: 22.3, 23.5

symptoms:

• strange in behaviour of the wfs-ng plugin is that every wfs GetFeature call releases DescribeFeatureType call (for the schema which seems failing, from org.geotools.xsd.impl PullParser probably), why isn't one sufficient?
• after number of multithreaded wfs calls (sometimes less, somethimes more)

Caused by: java.lang.ArrayIndexOutOfBoundsException: arraycopy: last source index 94 out of bounds for object array[93]
    at java.base/java.lang.System.arraycopy(Native Method) ~[na:na]
    at org.eclipse.emf.common.notify.impl.BasicNotifierImpl$EAdapterList.ensureSafety(BasicNotifierImpl.java:214) ~[org.eclipse.emf.common-2.15.0.jar!/:na]
    at org.eclipse.emf.common.notify.impl.BasicNotifierImpl$EAdapterList.remove(BasicNotifierImpl.java:244) ~[org.eclipse.emf.common-2.15.0.jar!/:na]
    at org.geotools.xsd.impl.SchemaIndexImpl.destroy(SchemaIndexImpl.java:93) ~[gt-xsd-core-22.3.jar!/:na]
    at org.geotools.xsd.Encoder.encode(Encoder.java:1119) ~[gt-xsd-core-22.3.jar!/:na]
    at org.geotools.filter.v2_0.bindings.BinarySpatialOpTypeBinding$1.encode(BinarySpatialOpTypeBinding.java:70) ~[gt-xsd-fes-22.3.jar!/:na]
    at org.geotools.xsd.Encoder.encode(Encoder.java:727) ~[gt-xsd-core-22.3.jar!/:na]
    ... 103 common frames omitted