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Apparently, the UK BDs with pink title text have the old scan, while those with blue have the new scan.
According to a thread on BD.com, the first US BD's theatrical cut's 5.1 audio has that issue variously described as sounding "tinny" or like it has "flanging" or "phasing". I can't ascertain whether or not it's fixed in the remastered US BD.
OFDb has the German BD specs, so I'll get that added asap.