This from the Console, also attached is Consistency Checks Output.
NOTE: Enabling Debug mode added no obvious information on the pages concerned.
Exception { name: "NS_ERROR_NOT_IMPLEMENTED", message: "Component returned failure code: 0x80004001 (NS_ERROR_NOT_IMPLEMENTED) [nsIAppStartup.secondsSinceLastOSRestart]", result: 2147500033, filename: "resource:///modules/BrowserGlue.sys.mjs", lineNumber: 1611, columnNumber: 0, data: null, stack: "_collectStartupConditionsTelemetry@resource:///modules/BrowserGlue.sys.mjs:1611:9\nBG__onFirstWindowLoaded@resource:///modules/BrowserGlue.sys.mjs:1717:10\nBG_observe@resource:///modules/BrowserGlue.sys.mjs:964:14\n_delayedStartup@chrome://browser/content/browser.js:2029:18\n", location: XPCWrappedNative_NoHelper }
BrowserGlue.sys.mjs:1620:15
Some cookies are misusing the recommended “SameSite“ attribute 8
Cookie “ips4_noCache” has been rejected because it is already expired. login
update.locale file doesn't exist in either the application or GRE directories 2 UpdateUtils.sys.mjs:138:13