Lines: preview differs from result


Maybe its just on my computer, maybe not. I don’t know. But I wonder why lines are displayed differently in the menu than they appear in reality.
I made a small (and rather ugly) illustration:

Green means: preview is correct
Red means: preview shows something different
You also can see, that lines 1 and 2 as well as 4 and 5 are the same in the preview but different in the project. So: to find out which line I need, I have to wait for each pop up description to check out.

Is there any option to display the lines correctly in the preview?

you can set the line start and end cap using the properties
or you can setup Lines in the engrave mode

Thanks odod!
Maybe my english is too weak to describe the issue.
I have no problem with creating and manipulating lines. I just wanted to mention, that the lines preview in the command-9 box shows different – or not the whole – lines. Thats just one of my nerdy inputs for the user interface designers of Dorico.