Dawnthread lining, if using 2 of the embellishment on your gear, is currently not stacking and is only applying one of the buffs.
Blue silken lining, shadowflame patches in dragonflight all stacked and gave double benefit if using x 2, I don’t see a reason (or it stated anywhere) that it should be different for Dawnthread lining in TWW
Tried unequipping, equipping in different orders, relogging, restarting client, nothing fixed it
Edit: fix in title