NotificationsIT.simpleNotifications is flickering

org.openqa.selenium.TimeoutException: 
Failed after [10] attempts. Expected: [21] - Latest value received: [0].
Build info: version: '4.24.0', revision: '748ffc9bc3'
System info: os.name: 'Linux', os.arch: 'amd64', os.version: '6.1.0-21-cloud-amd64', java.version: '17.0.12'
Driver info: driver.version: unknown
	at org.xwiki.platform.notifications.test.po.NotificationsTrayPage.waitOnNotificationCount(NotificationsTrayPage.java:118)
	at org.xwiki.platform.notifications.test.ui.NotificationsIT.simpleNotifications(NotificationsIT.java:179)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)