The way the pop-up bubble function has been implemented (and how it can be customised) makes this the most convenient and easy-to-use translation tool for my needs and the best translation extension I've come across. In truth I don't really need any of the other functions. However, I have noticed that this extension is consistently shown at the top for energy impact in about:performance, sometimes even higher than video playback, so something is always running in the background even if there is no functionality in use and even if the pop-up button is disabled. I really hope this gets worked on.