diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75be326..362b929 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## [11.2.1] - 2023-11-16
+
+**Breaking Change:** If you use the EngineUrl#path method with a query parameter, an IllegalArgumentException will be thrown.
+Please use the EngineUrl#queryParam method instead.
+
 ## [11.2.0] - 2023-11-15
 
 ### Added
diff --git a/web-tester/src/main/java/com/axonivy/ivy/webtest/engine/EngineUrl.java b/web-tester/src/main/java/com/axonivy/ivy/webtest/engine/EngineUrl.java
index 421aa9e..12ca7f7 100644
--- a/web-tester/src/main/java/com/axonivy/ivy/webtest/engine/EngineUrl.java
+++ b/web-tester/src/main/java/com/axonivy/ivy/webtest/engine/EngineUrl.java
@@ -20,6 +20,8 @@
 
 import javax.ws.rs.core.UriBuilder;
 
+import org.apache.commons.lang3.StringUtils;
+
 /**
  * This is a Util to build URLs against the designer (localhost:8081) or a test
  * engine.
@@ -75,23 +77,28 @@ public static EngineUrl create() {
   }
 
   public static String createProcessUrl(String path) {
-    return create().process(path).toUrl();
+    var parts = splitQueryFromPath(path);
+    return create().process(parts.path).toUrl() + parts.query;
   }
 
   public static String createRestUrl(String path) {
-    return create().rest(path).toUrl();
+    var parts = splitQueryFromPath(path);
+    return create().rest(parts.path).toUrl() + parts.query;
   }
 
   public static String createWebServiceUrl(String path) {
-    return create().webService(path).toUrl();
+    var parts = splitQueryFromPath(path);
+    return create().webService(parts.path).toUrl() + parts.query;
   }
 
   public static String createStaticViewUrl(String path) {
-    return create().staticView(path).toUrl();
+    var parts = splitQueryFromPath(path);
+    return create().staticView(parts.path).toUrl() + parts.query;
   }
 
   public static String createCaseMapUrl(String path) {
-    return create().caseMap(path).toUrl();
+    var parts = splitQueryFromPath(path);
+    return create().caseMap(parts.path).toUrl() + parts.query;
   }
 
   public EngineUrl base(String base) {
@@ -130,6 +137,9 @@ public EngineUrl servlet(SERVLET servlet) {
   }
 
   public EngineUrl path(String path) {
+    if (StringUtils.contains(path, "?")) {
+      throw new IllegalArgumentException("Adding query parameters via the path method will not work, please use the queryParam method or encode the '?' with '%3F'.");
+    }
     this.path = path;
     return this;
   }
@@ -161,6 +171,18 @@ private String getServletPath() {
     return "";
   }
 
+  private static PathAndQuery splitQueryFromPath(String pathWithQuery) {
+    if (pathWithQuery == null) {
+      return new PathAndQuery("", "");
+    }
+    var path = StringUtils.substringBefore(pathWithQuery, "?");
+    var query = StringUtils.substringAfter(pathWithQuery, "?");
+    if (query.length() > 0) {
+      query = "?" + query;
+    }
+    return new PathAndQuery(path, query);
+  }
+
   /**
    * Gets base URL of a running engine. Returns URL of started
    * project-build-plugin test engine ({@value #TEST_ENGINE_URL}) or
@@ -239,4 +261,5 @@ public static Boolean isDesigner() {
   }
 
   private static record QueryParam(String key, String value) {}
+  private static record PathAndQuery(String path, String query) {}
 }
diff --git a/web-tester/src/test/java/com/axonivy/ivy/webtest/engine/TestEngineUrl.java b/web-tester/src/test/java/com/axonivy/ivy/webtest/engine/TestEngineUrl.java
index df4736f..11a3187 100644
--- a/web-tester/src/test/java/com/axonivy/ivy/webtest/engine/TestEngineUrl.java
+++ b/web-tester/src/test/java/com/axonivy/ivy/webtest/engine/TestEngineUrl.java
@@ -1,14 +1,24 @@
 package com.axonivy.ivy.webtest.engine;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
 
 import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
 import com.axonivy.ivy.webtest.engine.EngineUrl.SERVLET;
 import com.codeborne.selenide.Configuration;
 
 class TestEngineUrl {
+  private static String BASE_URL = "http://www.axonivy.com:8080/ivy/";
+  private static String APP = "test";
+
+  @BeforeEach
+  void setup() {
+    System.setProperty(EngineUrl.TEST_ENGINE_URL, BASE_URL);
+    System.setProperty(EngineUrl.TEST_ENGINE_APP, APP);
+  }
 
   @AfterEach
   void cleanup() {
@@ -20,6 +30,8 @@ void cleanup() {
   void designerUrls() {
     var remote = Configuration.remote;
     try {
+      System.clearProperty(EngineUrl.TEST_ENGINE_URL);
+      System.clearProperty(EngineUrl.TEST_ENGINE_APP);
       Configuration.remote = null;
       String baseUrl = "http://localhost:8081/";
       assertThat(EngineUrl.createRestUrl("")).isEqualTo(baseUrl + EngineUrl.DESIGNER + "/api");
@@ -35,15 +47,11 @@ void designerUrls() {
 
   @Test
   void engineUrls() {
-    String baseUrl = "http://www.axonivy.com:8080/ivy/";
-    String app = "test";
-    System.setProperty(EngineUrl.TEST_ENGINE_URL, baseUrl);
-    System.setProperty(EngineUrl.TEST_ENGINE_APP, app);
-    assertThat(EngineUrl.createRestUrl("")).isEqualTo(baseUrl + app + "/api");
-    assertThat(EngineUrl.createWebServiceUrl("")).isEqualTo(baseUrl + app + "/ws");
-    assertThat(EngineUrl.createProcessUrl("")).isEqualTo(baseUrl + app + "/pro");
-    assertThat(EngineUrl.createStaticViewUrl("")).isEqualTo(baseUrl + app + "/faces/view");
-    assertThat(EngineUrl.createCaseMapUrl("")).isEqualTo(baseUrl + app + "/casemap");
+    assertThat(EngineUrl.createRestUrl("")).isEqualTo(BASE_URL + APP + "/api");
+    assertThat(EngineUrl.createWebServiceUrl("")).isEqualTo(BASE_URL + APP + "/ws");
+    assertThat(EngineUrl.createProcessUrl("")).isEqualTo(BASE_URL + APP + "/pro");
+    assertThat(EngineUrl.createStaticViewUrl("")).isEqualTo(BASE_URL + APP + "/faces/view");
+    assertThat(EngineUrl.createCaseMapUrl("")).isEqualTo(BASE_URL + APP + "/casemap");
     assertThat(EngineUrl.isDesigner()).isEqualTo(false);
   }
 
@@ -67,11 +75,15 @@ void urlBuidler() {
 
   @Test
   void queryParam() {
-    String baseUrl = "http://www.axonivy.com:8080/ivy/";
-    String app = "test";
-    System.setProperty(EngineUrl.TEST_ENGINE_URL, baseUrl);
-    System.setProperty(EngineUrl.TEST_ENGINE_APP, app);
     var url = EngineUrl.create().staticView("abc.xhtml").queryParam("userName", "crazy user").toUrl();
-    assertThat(url).isEqualTo(baseUrl + app + "/faces/view/abc.xhtml?userName=crazy+user");
+    assertThat(url).isEqualTo(BASE_URL + APP + "/faces/view/abc.xhtml?userName=crazy+user");
+  }
+
+  @Test
+  void queryParamInPath() {
+    assertThatThrownBy(() -> EngineUrl.create().path("bla?embedInFrame")).isInstanceOf(IllegalArgumentException.class)
+      .hasMessageContaining("Adding query parameters via the path method will not work");
+    assertThat(EngineUrl.createProcessUrl("start.ivp?locale=en&format=DE")).isEqualTo("http://www.axonivy.com:8080/ivy/test/pro/start.ivp?locale=en&format=DE");
+    assertThat(EngineUrl.createRestUrl("variable/myVar?value=new")).isEqualTo("http://www.axonivy.com:8080/ivy/test/api/variable/myVar?value=new");
   }
 }