Problem: Tangent curves are displaced from adjoining line segments when drawn in ArcMap
This problem is addressed in ArcGIS 8.1 Service Pack 1. See Related Information section to download this pack.
The start or end segment of a curve can appear to be disconnected from adjoining line segments. This can also cause fill symbols to appear to bleed beyond the boundaries of a polygon.
This is a problem with the display driver. The lines are actually connected and the data is not affected. Some displays may show more offset than others. Printing the map may also show this problem.
Solution or Workaround
Zoom out to a larger scale. The error should not be visible.