I've noticed several cases that polylines with many segments get "corrupted" when creating runtime content. It seems to happen most when there are short segments in the polyline.
Thanks in advance,
Here's what I'm seeing when I use the Edit Vertices tool on one of the lines in ArcMap. Notice the really short segments at the end of the line. For reference, that dogleg there toward the end is only about 7 feet long - that covers the last 3 vertices. On the device - runtime content - this line would look very bad.