Block selection in Webstorm.
I am used from Atom to do block selection via Alt+arrow combination. It's quick and easy.
Webstorm supports block selection, but I have to switch to block selection state (via Command+Shift+8), do the selection, do the changes, then switch back to regular selection (again Command+Shift+8).
Webstorm is great. I like it a lot. But I'm really annoyed by having to switch between selection states, instead of using a modifier.