upvotes/downvotes top counter - Lemmy.world

can simebody help me understand the counter system below an example which confused me thought its like up/down on the bottom appear if both exist top counter is the sum of both up/down on the bottom dont show numbers if there are only up or only down votes but my assumption is obviously wring [https://lemmy.world/pictrs/image/b11ce044-45c6-427b-840a-ffeaa5289903.jpeg]