Try to force JDK11 again
diff --git a/wtp-parent/pom.xml b/wtp-parent/pom.xml
index 6c726f4..53c4067 100644
--- a/wtp-parent/pom.xml
+++ b/wtp-parent/pom.xml
@@ -443,6 +443,14 @@
           <plugins>

             <plugin>

               <groupId>org.eclipse.tycho</groupId>

+              <artifactId>target-platform-configuration</artifactId>

+              <version>${tycho.version}</version>

+              <configuration>

+                <executionEnvironment>JavaSE-11</executionEnvironment>

+              </configuration>

+            </plugin>

+            <plugin>

+              <groupId>org.eclipse.tycho</groupId>

               <artifactId>tycho-compiler-plugin</artifactId>

               <version>${tycho.version}</version>

               <configuration>