Hmmm, well hardly surprising.
Those with long memories will recall that the first few B747's had huge engine problems with the JT9.
In fact, I personally spent four straight months flying various parts to SEA to 'fix' the problems.
High heat, torching, ovalation...melted back ends.
BIG problems.
Yet, the problems were fixed, and the 747 has gone on to be one very fine aeroplane.
Likewise with the A380, I expect.