Here is the for Baldur’s Gate 3 update v4.1.1.3732833 (commonly known as Patch #3 ), based on the official Larian Studios patch notes from September 2023.
: Origin characters, hirelings, and those fully transformed by the illithid threat were barred from its reflective magic. Forging a Smoother Path Baldur-s Gate 3 Update v4.1.1.3732833 -Patch 3-
: Now properly affected by magical sunlight (like the Daylight spell), preventing him from using Mist Form. Here is the for Baldur’s Gate 3 update v4