diff --git a/enrol/tests/behat/add_to_group.feature b/enrol/tests/behat/add_to_group.feature
index e44f9c2610d..269f5c66935 100644
--- a/enrol/tests/behat/add_to_group.feature
+++ b/enrol/tests/behat/add_to_group.feature
@@ -22,7 +22,7 @@ Feature: Users can be added to multiple groups at once
       | teacher1 | C1 | editingteacher |
       | student1 | C1 | editingteacher |
 
-  @javascript
+  @javascript @skip_chrome_zerosize
   Scenario: Adding a user to multiple groups
     Given I log in as "teacher1"
     And I am on "Course 1" course homepage
diff --git a/mod/assign/feedback/comments/tests/behat/feedback_comments.feature b/mod/assign/feedback/comments/tests/behat/feedback_comments.feature
index ef05251051c..b370b20524e 100644
--- a/mod/assign/feedback/comments/tests/behat/feedback_comments.feature
+++ b/mod/assign/feedback/comments/tests/behat/feedback_comments.feature
@@ -17,7 +17,7 @@ Feature: In an assignment, teachers can provide feedback comments on student sub
       | teacher1 | C1 | teacher |
       | student1 | C1 | student |
 
-  @javascript
+  @javascript @skip_chrome_zerosize
   Scenario: Teachers should be able to add and remove feedback comments via the quick grading interface
     Given the following "activities" exist:
       | activity  | course  | name                  | assignsubmission_onlinetext_enabled  | assignfeedback_comments_enabled  |