Short-Stack Master, wrong alias for chip-leader

While playing at the Short-Stack Master competition, I have noticed that when I take the chip lead the alias name that appears in the middle of the table is often not the one I am using. This happens very frequently and this last time it was not even the most recent alias name, it was one from a few days ago. I have always seen other chip leaders being represented by the alias they are using so I doubt others are seeing the same as me, but given that I use many aliases and don't want connections being made between them it's still a little unnerving.