Brief bug summary:
When you create an explorer character, you get an explorer book. When you complete certain quests of the explorer questline, a copy of what your character looked like at the time of completion will be saved in the explorer book. However, right now this seems to be bugged.
This is how the explorer book is supposed to look like (screenshot taken on a character I made when it wasn't bugged):
This is what is looks like right now for newly created explorers (screenshot taken on a character I made yesterday):
Both screenshots were taken just a moment ago, so that means only newly created characters have a bugged explorer book.
Steps to reproduce:
-Create a new explorer character.
-Get it to first job and complete the quest that gives you the explorer book.
-Get it to level 25 and complete the quests from the explorer questline which you unlock at that level.
-Wait until the daily reset. (For some reason, before the daily reset the right character model is shown.)
You can now double click the 'explorer book' item in your inventory to go to the same 'page' as the one in the screenshots.
The wrong character model is also present in the other pictures in the explorer book.
Character job: (probably) all newly created explorers