`HtmlFormUtil.getSubmitButton` picks wrong button for Jenkins config forms

[jglick]

Discovered in #702.

diff --git pom.xml pom.xml
index d4b87033d5..54dd8292c1 100644
--- pom.xml
+++ pom.xml
@@ -56,7 +56,7 @@ THE SOFTWARE.
 
   <properties>
     <changelist>999999-SNAPSHOT</changelist>
-    <jenkins.version>2.361</jenkins.version>
+    <jenkins.version>2.437</jenkins.version>
     <jmh.version>1.37</jmh.version>
     <gitHubRepo>jenkinsci/${project.artifactId}</gitHubRepo>
     <!-- Normally filled in by "maven-hpi-plugin" with the path to "org-netbeans-insane-hook.jar" extracted from this repository -->
diff --git src/main/java/org/htmlunit/html/HtmlFormUtil.java src/main/java/org/htmlunit/html/HtmlFormUtil.java
index c5bcccd75c..e696c9db67 100644
--- src/main/java/org/htmlunit/html/HtmlFormUtil.java
+++ src/main/java/org/htmlunit/html/HtmlFormUtil.java
@@ -50,6 +50,7 @@ public class HtmlFormUtil {
      */
     public static Page submit(final HtmlForm htmlForm) throws IOException {
         HtmlElement submitElement = getSubmitButton(htmlForm);
+        System.err.println("TODO submitElement=" + submitElement);
         return submit(htmlForm, submitElement);
     }
 
diff --git src/test/java/org/jvnet/hudson/test/SleepBuilderTest.java src/test/java/org/jvnet/hudson/test/SleepBuilderTest.java
index 1ae1b411a8..bab6aa6fef 100644
--- src/test/java/org/jvnet/hudson/test/SleepBuilderTest.java
+++ src/test/java/org/jvnet/hudson/test/SleepBuilderTest.java
@@ -14,8 +14,7 @@ public class SleepBuilderTest {
         FreeStyleProject project = j.createFreeStyleProject();
         SleepBuilder builder = new SleepBuilder(30);
         project.getBuildersList().add(builder);
-        j.configRoundtrip(project);
-        j.assertEqualDataBoundBeans(project.getBuildersList().get(SleepBuilder.class), builder);
+        j.configRoundtrip();
     }
 
 }

You might expect this to print the Save button. But that is not an <input type="submit">, it is some YUI craziness. Instead it picks

HtmlButton[<button tooltip="Copy home directory" text="/tmp/j h1749655323416403161" message="Copied" type="button" class="copy-button jenkins-button jenkins-button--tertiary jenkins-copy-button jenkins-!-margin-left-1" title="Copy home directory">]

And of course you do not want to click that. Yet it seems that HtmlForm.submit quietly accepts this and submits the form anyway.