There is an unwanted line occuring in the new TsTreeviewEx.
Its visible on the lower left side and inside the component.
The line goes from the bottom of the last visible entry to the bottom of the component.
If you change the borderwidth, the line moves also more to the center of the component.
That line is only visible if the component has the focus. If you remove the focuse the line disappears.
What i did:
I created a new project, put a TsTreeViewEx on the form and added some random entries.
Just so you know.