Construction Bug visual bug

Summary:

Steps to reproduce:

  1. star with building a wall… BIG WALL
  2. do that until this happens
  3. press this link for image of the bug i am having | http://i.imgur.com/bvLv2qD.jpg |

Expected Results:

Actual Results:

Notes:
i can not remove the Blueprint that are shoing on the image, was trying to deleted the blueprint i was woring on but this one part stayd behind
Attachments:

Version Number and Mods in use:
No mods, version 549
System Information:

System Info: GTX980, DDR3 6GB, Motherbord x58 Asus, intel 950 i7

one more just happend to me at the new game i just started link: http://i.imgur.com/RKhLke1.jpg