The locater (ctrl+k) does not show selected line

When openening the locater with ctrl+k and typing something to get a list with results, the list does not show a visible selected line makeing it very hard to select one result with the up/down keys.

There's actually someting visible but it is very unclear.

Steps to reproduce

1. Open locator: ctrl+k
2. Type: "? QString"

What do you expect
A list with a selected line as seen in

What do you see actual
A list with a very vaguely selected line as seen in