This is new to me from whatever version of kde I was using beforehand in debian 8. Previously, when I added an icon to the desktop, it would detect if it would have room at the size the icons were at, and then place itself accordingly, usually at the bottom of a column I have going. Now, in debian 9, it tries to squeeze in icons if there is any space at all by changing the icon size.
Here is a picture:
As you can see, the opera icon just decided to squeeze itself into the top by changing it's size, which is undesirable
So, I have two questions:
How can I change the size of individual icons?
How can I change how the desktop automatically places icons to avoid this altogether?