Currently, if I have a certain Graphic Style selected, it gets applied to objects created with Pen Tool or all shape-drawing tools (Ellipse, Rectangle, Polygon, Star).
This doesn’t work this way with line-drawing tools (Line Segment, Arc, Spiral, Grids…). Or rather it does, only if the “Fill Line” option is turned ON in the Tool Options window. It is turned OFF by default though AND this setting is not sticky between sessions.
So with every new session, I’m back to behavior when a chosen graphic style is not applied to an object drawn with a Line Segment Tool.