TTSD-3785 Previously, if you performed an operation that took a long time, Tekla Structures window turned black. This has now been fixed. Development area: User interface Included in Fixed defects in version 2018 Quick feedback Did you find what you were looking for? * Yes Partly No What is missing? The feedback you give here is not visible to other users. We use your comments to improve our content. Need support? Fill in this form instead. Leave this field empty We use this to prevent automated spam submissions.