#84 TreeListView with FullRowSelect doesn't update correctly

[Blade]

A TreeListView with FullRowSelect=true doesn't update correctly when arrow keys are used to navigate up/down. The first part of the tree lines don't update their 'selectedness', both in the old and the new row. This does work correctly when the mouse is used to select rows.

Steps to reproduce:
1. Create a TreeListView with FullRowSelect=True
2. Add some nodes to the tree
3. Select a row with the mouse and press the up or down key

Actual Result:
The part of the previously selected row containing the tree lines is still colored blue. The rest of the row updates correctly.
In the newly selected row, the same area is not colored blue, even though it should be. See attachment.

Expected result:
Using keys works identical to selecting using the mouse.

[Blade]

[Phillip Piper]

This has been fixed