Sanctum Sacred Mirror (Duplicate up to 3 random Offer Rewards) NOT WORKING

Had exactly 3 rewards for last floor AND sacred mirror
Expected result:
2 + 1 div + 14c dupe to 6d + 28c

Actual result:
2 + 1 div + 14c no dupe


Everything can be seen and explained in detail in the video as well

https://youtu.be/HfIDIGsiL6Q

As far as I'm aware, the Boons which duplicate rewards do so when they are acquired, not at the end of the Sanctum, and the duplicated rewards are added to the tooltip showing your rewards--meaning that they can only duplicate rewards earned earlier than the boon was picked up, and you can immediately see what was duplicated.

Thank you for your answer, in that case it would make sense