"Stroke Effect" in After Effects does a rounded corner.
How can i do a linear stroke, to use with the "Stroke Effect" in After Effects?
Attached you can find the actual result: (I want the start and the end of the stroke linear, not rounded)
That's because you have selected (or selected by default) - Round Cap stroke.
You can change that in Layer dropdown menu -> contents -> Stroke -> Line cap -> set to "butt cap"
See the attached image for better understanding