Guild Wars 2

I just bought 3 water runes and 2 dwayna runes and socketed them into my armor. Water gave me +15% boon duration, but the dwayna runes didn’t add +20% regen duration.
Skills considered: Hold the Line! and Save Yourselves!.
Is that working as intended? Are they supposed to not stack? If so, kitten I wasted 1,7g.
Thank you.

If it indicates +X% to boon or to condition duration, then that will be reflected into the tooltip. However if it explicitly indicates +20% to Regen or +15% to Protection, +10% to burning duration and so forth, then that will not be reflected into the tooltip but it will stack.

You can test this very easily by using the shout “Save Yourselves”.
Try it with your setup and you will see that the regen boon you have will last longer than the rest of the boons.

Just switched 1 water for 1 grove and added another grove. +15% Protection duration didn’t stack either.

are you going by the tooltip or buff icon when u gain regen/prot (keyboard skill mouse hover icon when u do) – some tooltips are showing different than actual durations when ability gained.

Yes, I was looking at the tooltips. I tested the way you said, and regen lasted longer indeed.
Thank you very much!