Entry description is updated only on mouse hover

[nightly-brew]

I noticed that the desktop file description shown at the bottom only seems to update when the mouse hovers on an entry.
It doesn't follow the selection when navigating with keys nor when filtering with the search bar.

[nightly-brew]

If i got it right, the focus signal for keyboards is "focus-in-event", and it should be linked here, right?

edit:
also here for pinned entries.

[nightly-brew]

Should be fixed with this nightly-brew@5478d38.

[nightly-brew]

Should I make a pull request? Even though it's a simple fix.