Sorry to hear that. I don' have my disc yet, so I can' tell. But the reviews at blu-Ray.com and dvdtalk.com were both favourable....What region/country is your release from? The before-mentioned reviews may not apply.
Region 4. No other blu-ray has done this before on the same TV and player. Including both animation and live-action films. It's really annoying.
One thing, Sophie, have you checked any others since? My TV did default to some random settings a few weeks back and caused a horrible effect throughout The Road, with the contrast boosted way too far. I thought that was the disc.