Index: /trunk/test/unit/org/openstreetmap/josm/TestUtils.java
===================================================================
--- /trunk/test/unit/org/openstreetmap/josm/TestUtils.java	(revision 17197)
+++ /trunk/test/unit/org/openstreetmap/josm/TestUtils.java	(revision 17198)
@@ -448,4 +448,8 @@
      */
     public static void assumeWorkingEqualsVerifier() {
+        if (Utils.getJavaVersion() >= 16) {
+            // Byte Buddy often supports new class file versions for current EA releases if its experimental flag is set to true
+            System.setProperty("net.bytebuddy.experimental", "true");
+        }
         try {
             // Workaround to https://github.com/jqno/equalsverifier/issues/177