Right-clicking on "Unread" category doesn't "select" it, which makes "Mark Read" context-menu action not work

[d3fault]

You have to left-click on Unread before you right-click.

Weirdly, you can right-click (without left-click) on a specific Feed and do "Mark Read" and it works. The bug is only for the Unread category (and maybe other categories?).