[random test failure] Drupal\Tests\settings_tray\FunctionalJavascript\SettingsTrayBlockFormTest::testBlocks

Problem/Motivation

https://git.drupalcode.org/issue/drupal-3533299/-/jobs/6303916

In https://git.drupalcode.org/project/drupal/-/blob/11.x/core/modules/setti...

 Failed asserting that a NULL is not empty.
       │
       │ /builds/issue/drupal-3533299/core/modules/system/tests/src/Traits/OffCanvasTestTrait.php:22
       │ /builds/issue/drupal-3533299/core/modules/system/tests/src/FunctionalJavascript/OffCanvasTestBase.php:81
       │ /builds/issue/drupal-3533299/core/modules/settings_tray/tests/src/FunctionalJavascript/SettingsTrayTestBase.php:59
       │ /builds/issue/drupal-3533299/core/modules/settings_tray/tests/src/FunctionalJavascript/SettingsTrayBlockFormTest.php:136
       │ /builds/issue/drupal-3533299/core/modules/settings_tray/tests/src/FunctionalJavascript/SettingsTrayBlockFormTest.php:58

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

Introduced terminology

API changes

Data model changes

Release notes snippet