For literally years my standard set of ingredients and trusty Panasonic have turned out consistently tall, fluffy loaves. The last two.... housebricks! (OK maybe not that bad but certainly shorter and denser than normal.) The flour is the same quality as normal and 50/50 white/wholemeal. The other ingredients haven't changed. Only slight difference has been Tesco easy-blend yeast sachets rather than a different brand... but they are well in the date-code.
So is it inferior yeast? Some other problem? Is the Panasonic dying?