Users need the ability to analyze keywords separately for each language without mixing data from other languages. Currently, refreshing rankings for US keywords pulls in keywords from French and Spanish, which is not ideal.
I noticed an issue after updating to the version 1.5.0. All my keywords were there, but all of them without popularity and difficulty information. I have several languages (French, spanish, english...) and after press the button "Refresh rankings" to get their information again, the data was recovered, but all the keywords of all the other languages were also added to United States. The rest of countries has only their keywords, but for US, it analyzed the keywords in French and Spanish too, and they were added to the list.