Issue #3496319 by spokje, catch: [random test failure] CommentPreviewTest::testCommentPreview

...dules/comment/tests/src/Functional/CommentPreviewTest.php

...user/tests/modules/user_hooks_test/user_hooks_test.module

core/modules/user/tests/src/Functional/UserEditTest.php

...odules/user/tests/src/Functional/UserTokenReplaceTest.php

core/modules/user/tests/src/Kernel/UserEntityLabelTest.php