Weird system message

I just ported to Gludio and received the following message in system window, written in white :
Invalid System Message format : 4054

Dunno if this display is intended or not, dunno if i have to worry or not, but maybe this can be helpful to the dev who added this x)

I notice it after I got a ingame mail, and also realize I dont see the you got a new mail system message so I think they screw up the "you got new mail" message format ergo it goes the error.