A Blurry Window (resolution?)

We had our scheduled visit from the window company. Didn't take him long to recognize and correct the problem. There are these little yellow tabs inside the window frame that have the word "DISCARD" stamped on them. The original installer should have removed these tabs and actually discarded them. And then the frame would properly seal when it shuts. And moisture wouldn't get between the window panes. I would have noticed the labels when I painted the window if the word hadn't been stamped INSIDE the tab where you couldn't see it. We're hoping this was the problem. There has been a little slight streaking of moisture since the inspection but we think that is related to the particular cleaning solution we've used since the installation. The window has been much clearer.