I'm guessing this may have to do with having over a certain number of players in a DC spot but I see a number of my depth charts are kinda Picasso style like this:

I don't have this problem but I do see that the current values are wrong on the chart, but when you look at the player card they are still right.

I get that too. when you move the player on the depth chart the value will be back to normal. looks like they auto get to the worst stat of any postion this player is on the depth chart.

if your SLB is 70/70 SLB and 37/69 MLB, he'll appear everywhere on the depth chart as 37/69 until you move him

In case it matters, I tried both FiredFoxes and Chromes and both show up with the above wacky charts.

I agreed the players not showing with their actual skill at the assigned DC spot is a bigger issue than the cosmetic one that I have pictured.