In ArcMap 10.3, when I split a polyline manually, I can see that the line is split when I highlight that part of the line.

But when I do a split at a specified distance, the line still appears as one single line and I cannot tell where the breaks in the line are although I can select each segment individually. In the image below, I simply selected what should be the first segment but the whole line lights up as selected.

Why isn't the bottom image showing each segment like the first image where I manually split the line?
Thanks everyone!