diff --git a/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php b/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php
index d1040492d6ec06cb31f7ba025039ad1c34bb5635..9388ec8d7dc2f3b26d0d1d27da2e393ad9693b4c 100644
--- a/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php
+++ b/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php
@@ -51,6 +51,9 @@ protected function setUp() {
    * Tests opening Offcanvas tray by click blocks and elements in the blocks.
    */
   public function testBlocks() {
+    // @todo: re-enable once https://www.drupal.org/node/2830485 is resolved.
+    $this->markTestSkipped('Test skipped due to random failures in DrupalCI, see https://www.drupal.org/node/2830485');
+
     $web_assert = $this->assertSession();
     $blocks = [
       [