Big Sur Dock Icons

Since upgrading to Big Sur, the open minimized icons on my Dock show up as sort of missing when I open my Macbook Pro.

I have not been able to find anything online about this because I can't even apparently figure out how to explain it. They aren't "missing" per say, they just aren't really showing up properly. Here are some screenshots:

I can pull up the page and minimize again and then it shows up like normal (like the Firefox icons do - which is curious, why does the Firefox stay up but everything else doesn't). So, I can return the dock to normal by maximizing each icon, one at a time, and then minimizing again. Irritating.

Yes, yes, I know I have a lot of stuff open, that's very normal for my computer usage and no issues until upgrading to Big Sur (which has caused a lot of spinning wheels and slow down). This is a 2016 Macbook Pro and it's a decently hardy beast (I don't ever buy anything less as obviously, it needs to be able to keep up with me). Until Big Sur. So, trying to figure out how to get it working smoothly again and be usable.

Anyone else running into this weird minimized icon disappearing issue? If you have, any luck solving it?

Thanks!

~ HUK