From your description it sounds as if there's a setting within your program that needs changing. I know nothing about Tekla Structures, but settings like that are usually under File / options, or Tools / Options.
Surface Pro (2017) vs Surface Pro 4
20 groundbreaking 3D animation technologies coming to Siggraph 2017
iPad Pro 12.9 vs Surface Pro 5
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.