Hit by Rien:
java.util.ConcurrentModificationException at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:390) at java.util.LinkedHashMap$ValueIterator.next(LinkedHashMap.java:405) atcom.avaje.ebeaninternal.server.querydefn.OrmQueryDetail.removeSecondaryQueries(OrmQueryDetail.java:194) atcom.avaje.ebeaninternal.server.querydefn.OrmQueryDetail.removeSecondaryQueries(OrmQueryDetail.java:149) atcom.avaje.ebeaninternal.server.querydefn.DefaultOrmQuery.removeQueryJoins(DefaultOrmQuery.java:336) atcom.avaje.ebeaninternal.server.loadcontext.DLoadContext.registerSecondaryQueries(DLoadContext.java:137) atcom.avaje.ebeaninternal.server.core.OrmQueryRequest.(OrmQueryRequest.java:112) atcom.avaje.ebeaninternal.server.core.DefaultServer.createQueryRequest(DefaultServer.java:1142) atcom.avaje.ebeaninternal.server.core.DefaultServer.findList(DefaultServer.java:1389) atcom.avaje.ebeaninternal.server.querydefn.DefaultOrmQuery.findList(DefaultOrmQuery.java:896)
Fix in HEAD. Copy the OrmQueryDetail ... so as not to share instances when using Autofetch tuned queries.