With some graphic cards you may get streaks in the 2D-view (marked with a black arrow in the picture) when you move the view vertical (for example with the mouse wheel).
The reason therefore:
A part of the 2D-view is positioned outside of the cadvilla window. Thereby streaks appear in the lower part of the 2D-view when you scroll the view vertical.
How to solve this problem:
Position the 2D-view windows inside of the cadvilla window.
- move the 2D-view window to a position inside of the cadvilla window.
- click on one of the icons which are tagged by a red arrow. Thereby the views get placed side by side horizontal or vertical.
- click on the icon which is tagged by a yellow arrow to maximize the 2D-view, after you are finished in the 2D-view you can minimize the window again.
This post is also available in: German