I use the Resource popup to select icons. I search for the icons and drag them to the design file. Every time the resource popup is closed after drag, I think it should open until I click somewhere on the design file, or I can close it with a close button. When I want to choose more than one icon, every time components load again, this is unnecessary.
The change of location and size bothers me. There is no need for the panel to extend all the way down. With the floating window, I feel like it will disappear when I close it with the x button. It doesn’t feel like it will go back to its original position when I close it. Because this is what happens in many applications and we have a habitual feeling.