I have a weird issue with the Grub menu. When I boot if I make the menu appear I have the entry to boot manjaro selected. If I press the down arrow, the selection moves the the next entry. If I press the down arrow again, then the selection should move again. However the highlighted menu entry stays the same. If I press the down arrow once more, I see the highlighted entry moving down two lines, so indicating that the previous press did actually have an effect and that the effect was merely not displayed by changing the highlighted menu entry.
Is anyone else experiencing something similar?