Guild Wars 2

I got a video playing WvW and I watched it and saw that doing F1 on hammer stuns enemies, but I don’t see any damage indicater, similarly, elems have the same problem with Churning Earth 5 sometimes.
Also, Hammer stun F1 doesn’t work down any slope, not the slightest. And you can see the AoE going on the vertical line and not on a horizontal line.

I mean Hammer F1 not burst skills…