When you get the same proficiency from multiple sources (for instance, Stealth from Lightfoot Halfling and Urchin Background), you should get a free pick of a skill instead - but in BG3 you basically "lose" a proficiency via the overlap.
That's not a difference between BG3 and PHB.
Yes it is. PHB specifically states:
Originally Posted by PHB page 125
"If a character would gain the same proficiency from two different sources, he or she can choose a different proficiency of the same kind (skill or tool) instead."
Last edited by praxidicae; 12/10/2001:49 PM. Reason: Edited due to a reference to a post I made in a different conversation as having been in this conversation