Id over 512 bug . any way to fix it?

Hello,

I noticed that if the id are over 512 the server breaks, I am wondering, is it going to be fix ?
Or is there a way to fix this issue except restart to start from 0 ?

It can happen easily when, for example, 20 people connects at the same time, and only one of them gets a slot, so his id will be the last id of the server + (1 to 20) . Making it possible to reach 512 very fastly.