Pillar not being highlighted in bar graph

In the Simple Bar Graph example, when left-clicking a pillar in the graph, the pillar will be highlighted and the corresponding item in the list to the left will also be highlighted. When left-clicking an item in the list however, the corresponding pillar in the graph will not be highlighted. The highlight remains on the last pillar which was left-clicked.

Steps to reproduce:

1. Scroll in the list until you find the item for February 2018.
2. Left-click the pillar in the graph that is for February 2018. Notice that both the pillar and the item in the list will be highlighted.
3. Scroll in the list until you find the item for February 2019.
4. Left-click this item. Notice that while this item will be highlighted, the pillar for February 2019 will not be highlighted, and that the highlight remains for the February 2018 pillar.
5. Left-click any of the entries in the list. Notice that the pillar for February 2018 will continue being highlighted, until you left-click a different pillar.

Expected behavior:

Since selecting a pillar will automatically select its corresponding item in the list, then selecting an item in the list should also automatically select its corresponding pillar in the graph.