It's happened to me twice now—first with a speed-buffed Kryon sold in the last month or two, now with Explicit Violet (between those purchases, two others whose names I don't know have mentioned the same issue, I believe in regards to an Elaris, but they may not be the only ones). The marketplace description says the dragons are account-wide, yet when purchased, the dragons are given only to the purchasing character rather than the account. I'm relatively confident this is not an account bug of some kind, since just before this Explicit Violet purchase I bought an account-wide Sunset, and all of my characters did receive that dragon. So I'm left to assume this is a marketplace issue. It causes a couple of problems:
1.) The dragon may go to a character which the player wouldn't have chosen to receive it had s/he been aware that it was a single dragon rather than an account-wide one. This is exactly what happened to me; believing I'd purchased an account-wide dragon, I opened the egg right away with the "wrong" character to get a look at my new dragon, but when I switched characters, the other character had not received an egg. I'm left to assume none of the other characters in my account have it either. Resolving this, while possible, costs diamonds a player may have intended to spend on other things, which is very frustrating as it's arguably not the fault of the player.
2.) Any title accompanying the dragon may go to a character the player doesn't want the title to go to. Since titles can't be transferred between characters, this is clearly also going to be very frustrating (and expensive to resolve, if the player chooses to go that route).
Of the dragons (eleven in total) currently being offered in the marketplace, four of them—Seamoon, Black Indigo, Explicit Violet, and Violet Thorn—claim to be account-wide (I've attempted to attach images of this but am getting an error message, so they may or may not be available, but I can provide them in some other way if necessary). This is in contrast to the post in the forum about these dragons, which says only Violet Thorn is account-wide. Though I check the forum regularly, I rarely check it more than once daily, so I usually rely first on the marketplace descriptions to tell me exactly what I'm buying because I'm in the game much more often. If the information doesn't match, it's impossible for me or other players to know which source is correct unless we actually buy something we a) aren't sure we want if it isn't what it claims it is (i.e., account-wide), and b) can't return if it turns out to be what we don't want, and it's unreasonable to expect us to do that.
I hope this issue can be fixed soon, so I can trust that I'm actually getting what I'm led to believe I'm getting.