Well doesn't that just result in an incorrect display anyway? Even if the ID shown is consistent with the actual calculation, if that calculation is incorrect it displays the wrong ID as far as the final result concerned. I don't know if it matters if I quit PSO before being put into the lobby with the new character, but upon doing so the ID is also correct on the character selection screen. I'm guessing it's corrected while connecting immediately afterward, or it's never actually wrong in the character data and only appears so, thus a display problem.
To use my specific criteria as an example, I entered さくら and it displayed Redria on the creation screen, whereas in-game and every BB calculator I've used (Ephniea normally but PSOW's confirmed it; I actually can't access your tool right now because dropbox traffic) shows Yellowboze. Coincidentally, サクラ is calculated as a Redria so I thought it was perhaps just a kana issue, but upon creation it showed Purplenum, while 桜 displayed Oran when it is Whitil.
For anybody that wonders, those all read as "sakura".