diff --git a/src/main/java/org/olat/ims/qti21/ui/_content/assessment_results.html b/src/main/java/org/olat/ims/qti21/ui/_content/assessment_results.html
index 63838760be8157be3bccdf4d6d63a3ff8ecee719..f530557c0403f7e5f0e8f44840fd8b9928605647 100644
--- a/src/main/java/org/olat/ims/qti21/ui/_content/assessment_results.html
+++ b/src/main/java/org/olat/ims/qti21/ui/_content/assessment_results.html
@@ -518,6 +518,14 @@
 								jEl.css('height', jEl.attr('height') + "px");
 							}
 						});
+						jQuery('#collapse_${itemResult.interactionResults.solutionFormItem.name} div.o_oo_hotcontainer>div').each(function(index, el) {
+							var jEl = jQuery(el);
+							if(jEl.css('height') == '0px') {
+								var containerEl = jEl.closest("div.o_oo_hotcontainer");
+								jEl.css('height', containerEl.css('height'));
+								jEl.css('background-size', containerEl.css('width') + " " + containerEl.css('height'));
+							}
+						});
 					})
 				});
 				/* ]]> */
diff --git a/src/test/java/org/olat/selenium/page/qti/QTI21Page.java b/src/test/java/org/olat/selenium/page/qti/QTI21Page.java
index ddd327e967ecf77bab1d0238008d28d8d8b5d348..ae4a9ac52e1fb7d46212061ccdb985e41eb65399 100644
--- a/src/test/java/org/olat/selenium/page/qti/QTI21Page.java
+++ b/src/test/java/org/olat/selenium/page/qti/QTI21Page.java
@@ -551,9 +551,7 @@ public class QTI21Page {
 	public QTI21Page moveToVerticalSlider() {
 		By interactionBy = By.id("itemBody");
 		OOGraphene.waitElement(interactionBy, browser);
-		if(browser instanceof FirefoxDriver) {
-			OOGraphene.scrollTo(interactionBy, browser);
-		}
+		OOGraphene.scrollTo(interactionBy, browser);
 		return this;
 	}