Green/Red arrows in Carnage Report meaning

After you complete a ranked game you can click on your tag to see whether you ranked up or down. To the right of that a Green Up arrow is displayed or a Red Down arrow.
Sometimes these arrows are inconsistent with whether your rank went up or down. So I did a test.

I went into FFA and recorded the results of the Ranks and Green/Red Arrow states after every game. Here is the result.

1567 After: 1st Place Green Up Arrow
1578 After: 1st Place Green Up Arrow
1568 After: 4th Place Green Up Arrow
1571 After: 2nd Place Green Up Arrow
1572 After: 2nd Place Green Up Arrow
1583 After: 1st Place Green Up Arrow
1586 After: 2nd Place Green Up Arrow
1586 After: 4th Place Green Up Arrow
1594 After: 1st Place Green Up Arrow
1587 After: 5th Place Green Up Arrow
1582 After: 3rd Place Green Up Arrow
1574 After: 3rd Place Green Up Arrow
1567 After: 3rd Place Green Up Arrow
1570 After: 1st Place Green Up Arrow
1570 After: 4th Place Green Up Arrow
1572 After: 3rd Place Green Up Arrow
1584 After: 1st Place Green Up Arrow
1583 After: 2nd Place Green Up Arrow
1576 After: 3rd Place Green Up Arrow
1579 After: 1st Place Green Up Arrow

Several times my rank dropped, but not a single time did a Red Down Arrow appear. So what is the meaning of the Green Up and Red down arrows beside the rank in the Post-Game Carnage Report?

> 2533274806394416;1:
> After you complete a ranked game you can click on your tag to see whether you ranked up or down. To the right of that a Green Up arrow is displayed or a Red Down arrow.
> Sometimes these arrows are inconsistent with whether your rank went up or down. So I did a test.
>
> I went into FFA and recorded the results of the Ranks and Green/Red Arrow states after every game. Here is the result.
>
> 1567 After: 1st Place Green Up Arrow
> 1578 After: 1st Place Green Up Arrow
> 1568 After: 4th Place Green Up Arrow
> 1571 After: 2nd Place Green Up Arrow
> 1572 After: 2nd Place Green Up Arrow
> 1583 After: 1st Place Green Up Arrow
> 1586 After: 2nd Place Green Up Arrow
> 1586 After: 4th Place Green Up Arrow
> 1594 After: 1st Place Green Up Arrow
> 1587 After: 5th Place Green Up Arrow
> 1582 After: 3rd Place Green Up Arrow
> 1574 After: 3rd Place Green Up Arrow
> 1567 After: 3rd Place Green Up Arrow
> 1570 After: 1st Place Green Up Arrow
> 1570 After: 4th Place Green Up Arrow
> 1572 After: 3rd Place Green Up Arrow
> 1584 After: 1st Place Green Up Arrow
> 1583 After: 2nd Place Green Up Arrow
> 1576 After: 3rd Place Green Up Arrow
> 1579 After: 1st Place Green Up Arrow
>
> Several times my rank dropped, but not a single time did a Red Down Arrow appear. So what is the meaning of the Green Up and Red down arrows beside the rank in the Post-Game Carnage Report?

Well recently they mad changes to FFA ranking so no telling what they did to it really. I used to have the link in my signature but it’s in the match making section on one of the pinned threads at the top.