I found there is one difference between latest released paraview and latest one on Git:
Look at below picture, the latest version on GitHub have extra dash-line on the edge when rotate the box in picture view:
Or set the polygon offset factor to zero on the same page, that will do it as well. The issue has to do with how we try take make lines show up on top of polygons. Our current solutions all involve tradeoffs such as what you saw.