diff --git a/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/V2SessionCatalog.scala b/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/V2SessionCatalog.scala
index 15166c822903..3d6de985a62f 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/V2SessionCatalog.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/V2SessionCatalog.scala
@@ -81,10 +81,17 @@ class V2SessionCatalog(catalog: SessionCatalog)
     new CaseInsensitiveStringMap(propertiesWithPath.asJava)
   }
 
+  private def hasCustomSessionCatalog: Boolean = {
+    catalog.conf.contains(SQLConf.V2_SESSION_CATALOG_IMPLEMENTATION.key)
+  }
+
   override def loadTable(ident: Identifier): Table = {
     try {
       val table = catalog.getTableMetadata(ident.asTableIdentifier)
-      if (table.provider.isDefined) {
+      // The custom session catalog may extend `DelegatingCatalogExtension` and rely on the returned
+      // table here. To avoid breaking it we do not resolve the table provider and still return
+      // `V1Table` if the custom session catalog is present.
+      if (table.provider.isDefined && !hasCustomSessionCatalog) {
         val qualifiedTableName = QualifiedTableName(table.database, table.identifier.table)
         // Check if the table is in the v1 table cache to skip the v2 table lookup.
         if (catalog.getCachedTable(qualifiedTableName) != null) {