When clicking on Bing logo in popup, the text is not entered on bing translator(even if the text is selected, not selected in image). It does work if use "Translate Selected Text" from icon drop down
Edit: just tried here https://hk.yahoo.com/, simply clicking the icon shows instant results
And one question, it seems this extension is always running(as evidenced when hovering different languages for instance), is it using much resources?