ClassEditorIT.updateSheetAndTemplate is flickering

org.openqa.selenium.TimeoutException: 
Expected condition failed: waiting for org.xwiki.test.ui.XWikiWebDriver$$Lambda$1624/0x0000000100d16040@4456fdd9 (tried for 10 second(s) with 500 milliseconds interval)
Build info: version: '4.15.0', revision: '1d14b5521b'
System info: os.name: 'Linux', os.arch: 'amd64', os.version: '4.19.0-16-cloud-amd64', java.version: '11.0.6'
Driver info: org.xwiki.test.ui.XWikiWebDriver
Capabilities {acceptInsecureCerts: false, browserName: chrome, browserVersion: 120.0.6099.109, chrome: {chromedriverVersion: 120.0.6099.109 (3419140ab66..., userDataDir: /tmp/.org.chromium.Chromium...}, fedcm:accounts: true, goog:chromeOptions: {debuggerAddress: localhost:39995}, goog:loggingPrefs: {browser: ALL}, networkConnectionEnabled: false, pageLoadStrategy: normal, platformName: linux, proxy: Proxy(), se:bidiEnabled: false, se:cdp: ws://172.17.0.7:4444/sessio..., se:cdpVersion: 120.0.6099.109, se:vnc: ws://172.17.0.7:4444/sessio..., se:vncEnabled: true, se:vncLocalAddress: ws://172.17.0.7:7900, setWindowRect: true, strictFileInteractability: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unhandledPromptBehavior: ignore, webauthn:extension:credBlob: true, webauthn:extension:largeBlob: true, webauthn:extension:minPinLength: true, webauthn:extension:prf: true, webauthn:virtualAuthenticators: true}
Session ID: f8ebc4b3ec77e5a06a5a659a6ab49888
	at org.openqa.selenium.support.ui.WebDriverWait.timeoutException(WebDriverWait.java:84)
	at org.openqa.selenium.support.ui.FluentWait.until(FluentWait.java:229)
	at org.xwiki.test.ui.XWikiWebDriver.waitUntilCondition(XWikiWebDriver.java:228)
	at org.xwiki.test.ui.XWikiWebDriver.waitUntilElementsAreVisible(XWikiWebDriver.java:330)
	at org.xwiki.test.ui.XWikiWebDriver.waitUntilElementIsVisible(XWikiWebDriver.java:285)
	at org.xwiki.test.ui.XWikiWebDriver.waitUntilElementIsVisible(XWikiWebDriver.java:273)
	at org.xwiki.appwithinminutes.test.po.ApplicationEditPage.<init>(ApplicationEditPage.java:82)
	at org.xwiki.appwithinminutes.test.po.ApplicationClassEditPage.<init>(ApplicationClassEditPage.java:62)
	at org.xwiki.appwithinminutes.test.po.ApplicationClassEditPage.goToEditor(ApplicationClassEditPage.java:166)
	at org.xwiki.appwithinminutes.test.ui.ClassEditorIT.goToEditor(ClassEditorIT.java:442)
	at org.xwiki.appwithinminutes.test.ui.ClassEditorIT.updateSheetAndTemplate(ClassEditorIT.java:312)