This is happening to all reincarnations, think it happened to 3 I did already. Rump removed the spare from one of them but the others still have the doubled rings, I asked another DM to remove them another day but never got a reply about it.
And as I put all copies in the last panel of the inventory I never remembered to come here and post about this.
It also gives 2 copies of the zeryal token if you have one.
That also happened to me. But, I didn't get the second copies of the rings and token until I went to reclaim my epic spells. When I next jump on, I'll see if a DM can remove the dupes (can Guide PC's do this too?).