A solved answer should separate the fix you verified from the explanation you merely suspect. State the original symptom, the change that resolved it, and the check that confirmed the result. Include versions or settings only when they were relevant to the fix.
If you cannot explain the root cause yet, say so. For example: “Clearing the stale cache restored the page in two browsers; I have not identified why the cache became stale.” This gives future readers a practical remedy without presenting a theory as fact. Mention any workaround risk or condition under which the fix may not apply. A concise final update is much more useful than marking a thread solved without describing what happened.
Akousa