I have 10 toons on my main server (Bonechewer). I went to make a level 1 on another server, and then logged off again. I went back to Bonechewer, and my main (this one I'm posting from) was no longer at the top of my list. I can find it however listed as ERROR - too many characters now at the bottom of my list.
I've logged off and back on again, and this persists (for a few minutes)
Here's a screenshot of my "New" list....
The "Error" one is clickable, and it shows this toon, and I could log in with it. It seems to have fixed itself after staying logged in for a little while and going back to the login screen.
I've just managed to replicate this issue twice.
Find a server you have 10 characters on.
Make a note of the first character.
Find a new server, and create a toon with the same name.
Log into this server, and close the cinematic screen
Logout and then delete said toon.
Your list should now error out and show as mine does above.