Coruscation Staff small area

Warhammer: Vermintide 2 Bugs
1

i saw a video of the new staff an the area was same as conflagration staff, but when i use it only get a small area. i don see any change on patchnotes so i thinkkis a bug but maybe was a hidden nerf

https://youtu.be/lU3ovH_Tsa4?t=385

2

it was changed to be smaller but more dot, dmg