Side panel won't re-open tabs after closing them

[TaeHagen]

When using the left side panel to select anything, it becomes highlighted blue and a tab opens. After closing the tab, clicking on the item currently highlighted blue does not re-open the tab. The only way to re-open the tab is clicking on another item then on the desired one, and if there is only one item on the list the only way is to double-click the blue item.

I doubt this is desired behavior, and certainly confused me when I was trying to re-open a panel I closed and nothing happened.