Ahhh, ok, I know what you mean now by "loses focus". It's not "losing focus" per se. The script is still running. I get that same type of thing with other things I do but I don't have a great deal of memory on my computer either so if a lot of memory is being used, things slow down and take time to appear. I don't know what other scripts are you are referring to, and while I don't know anything about scripting, but I suspect that because WW goes through an analysis process including the item's morphs, that it takes a lot of memory to do that. The script still runs even though you can't see the text scrolling by. Once the analysis is done, the done window appears. I wouldn't worry about it.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi