Not that I recall... I've heard of it before though. Not sure if I believe it or not.
Allow me to get bro sciencey for a minute though, test E seems to be an odd compound. I should say, the enanthate ester seems to cause odd reactions.
Completely anecdotal, but I have heard so many times that guys have odd experience with enanthate and when they switch to cyp they are fine. Of course, it could always just be the product was poor to begin with... But these guys are often running reasonably reputable lab products that others aren't having issues with.
I've heard of poor bloods a few times but rarely, the biggest complaint I've heard of is very bad PIP reactions on Enanthate but completely fine with cyp. I've read there is a chemical commonly found in enanthate raws the many people have reactions to... Whether it's true or not, I really don't know.
Again, it's just something I've had my eye on over time. Possibly something to listen for to see if there is any science behind the anecdotes.