diff --git a/src/test/java/org/olat/selenium/page/course/GroupTaskToCoachPage.java b/src/test/java/org/olat/selenium/page/course/GroupTaskToCoachPage.java
index 772d3d9bf136563353ce5e11180e08d661a4ba0b..934e95dae6ad86cd3a5fc732a440f686e99ed03d 100644
--- a/src/test/java/org/olat/selenium/page/course/GroupTaskToCoachPage.java
+++ b/src/test/java/org/olat/selenium/page/course/GroupTaskToCoachPage.java
@@ -22,7 +22,6 @@ package org.olat.selenium.page.course;
 import java.io.File;
 import java.util.List;
 
-import org.jboss.arquillian.drone.api.annotation.Drone;
 import org.junit.Assert;
 import org.olat.selenium.page.graphene.OOGraphene;
 import org.olat.user.restapi.UserVO;
@@ -40,13 +39,8 @@ import org.openqa.selenium.WebElement;
  */
 public class GroupTaskToCoachPage {
 	
-	@Drone
 	private WebDriver browser;
 	
-	public GroupTaskToCoachPage() {
-		//
-	}
-	
 	public GroupTaskToCoachPage(WebDriver browser) {
 		this.browser = browser;
 	}
@@ -134,7 +128,16 @@ public class GroupTaskToCoachPage {
 	
 	public GroupTaskToCoachPage openIndividualAssessment() {
 		By assessmentButtonBy = By.cssSelector("#o_step_grading_content .o_sel_course_gta_assessment_button");
-		browser.findElement(assessmentButtonBy).click();
+		List<WebElement> buttons = browser.findElements(assessmentButtonBy);
+		if(buttons.isEmpty() || !buttons.get(0).isDisplayed()) {
+			//open grading tab
+			By collpaseBy = By.xpath("//a[@href='#o_step_grading_content']");
+			browser.findElement(collpaseBy).click();
+			OOGraphene.waitElement(assessmentButtonBy, browser);
+			browser.findElement(assessmentButtonBy).click();
+		} else {
+			buttons.get(0).click();
+		}
 		OOGraphene.waitBusy(browser);
 		return this;
 	}
@@ -158,7 +161,16 @@ public class GroupTaskToCoachPage {
 	
 	public GroupTaskToCoachPage openGroupAssessment() {
 		By assessmentButtonBy = By.cssSelector("#o_step_grading_content .o_sel_course_gta_assessment_button");
-		browser.findElement(assessmentButtonBy).click();
+		List<WebElement> buttons = browser.findElements(assessmentButtonBy);
+		if(buttons.isEmpty() || !buttons.get(0).isDisplayed()) {
+			//open grading tab
+			By collpaseBy = By.xpath("//a[@href='#o_step_grading_content']");
+			browser.findElement(collpaseBy).click();
+			OOGraphene.waitElement(assessmentButtonBy, browser);
+			browser.findElement(assessmentButtonBy).click();
+		} else {
+			buttons.get(0).click();
+		}
 		OOGraphene.waitBusy(browser);
 		return this;
 	}
diff --git a/src/test/java/org/olat/selenium/page/graphene/OOGraphene.java b/src/test/java/org/olat/selenium/page/graphene/OOGraphene.java
index 39d1fdfb1ab749c9c35f7e11a704b5190d9efca1..ea13a8d1b19cdfe4497822c9fe180312fe62bda1 100644
--- a/src/test/java/org/olat/selenium/page/graphene/OOGraphene.java
+++ b/src/test/java/org/olat/selenium/page/graphene/OOGraphene.java
@@ -136,6 +136,10 @@ public class OOGraphene {
 		return Locale.ENGLISH;
 	}
 	
+	/**
+	 * Wait the end of the transition of the user's tools bar.
+	 * @param browser
+	 */
 	public static final void waitingTransition(WebDriver browser) {
 		Graphene.waitModel(browser).pollingEvery(poolingDuration, TimeUnit.MILLISECONDS).until(new TransitionPredicate());
 		waitingALittleBit();