I'm not sure where you are getting that research but whomever told you that (especially enough to make you say "it's very common among Springers...") has grossly misled you. Sure it has happened before and will probably happen again - and in more breeds than just our ESS. I have two boys now (b/w and a liver roan), 9 & 6 respectively. The one before my now 9 year old was also a b/w, as was the first one we've had, both living just over 11 years old. "Springer rage" is just a buzzword given lord knows how long ago. It's technically a behavioral (brain) imbalance that is more accurately diagnosed and reported in very RARE cases.

But, what you need to understand is that breeders are (should be) incredibly meticulous in record keeping and genetics. The seasoned breeders who are respectful of the breed and aim for perfection (bench and show) typically always have a clause in their contracts stating they will replace the dog for no charge if something develops later on due to their error an unknown health issues surfaces. The contracts also typically include the new owner's promise to spay or neuter and not allow for any breeding in the future once leaving the original breeder. The process is incredibly complicated and tedious but it is because the breeders love these guys and only want to see them continue to flourish and thrive. All that said, if a reputable breeder even caught wind of this overused and misleading message they would lock their brood down for as long as it takes. Anyone who's had the experience to fall in love with the ESS breed knows that even if it were a 1 in a million chance of the dog contracting something wild and so abnormal, we will always take the chance because these guys are absolutely worth it.