I found the following article in Simple Flying on the QANTAS A380 unserviceabilities:
https://simpleflying.com/quarter-qan...leet-grounded/
Very much over the top and written in emotive language from the passengers perspective quoting their Twitter messages.
From our interest there is no reason mentioned for OQFs mechanical problems and its lengthy stay in SIN.
BTW, QF8 arrival today was cancelled as is today's QF1.