Battlenet Tag still displayed in Trade Topics ("Header") even after the Tag was removed from the Profile

Device: PC
Browser: Firefox
OS: Windows 10

Steps to reproduce:
Enter Battlenet Tag into Profile, Save
make some trades
remove Battlenet Tag from Profile
Make new Trade Topic, Battlenet Tag still displayed

Anything else to add:
Trade Topic where this occured: post884797.html#p884797

It has a 3 hour cache on it at the moment, you'll see it eventually.

This is changing next patch.

seems to persist:
trade/hellfire-torch-t393574.html

haven't made any changes to the profile since i removed the battle.net tag some days ago.