Pretty much the title.
If you create character on one Realm and then create other realm and finish ship section of prologue with this character (when you appear naked on the coast) - you will lost all your items (except for currency) as if you played prologue on new character.
I’m not exactly sure whatever it is intended behavior or not - but its really frustrating to lose almost all things just because you wanted to farm "rare: clay.
You might want to post this as a bug rather than feedback. That sucks!