Currently if you click on a collocate on a word sketch then the concordances open up in a new window. This is incovenient if you are running several windows at the same time. Also the sketch engine does not open a new window but takes over an existing window which is inconvenient as you may be using that window. It also seems to take over another window at randow i.e. if you have 5 tabs on the bottom bar it may take over the next to the right, left, the middle or the first, so you have to hunt for which it has colonized.
In short, I find it much more convenient to use the system whereby the concordances are shown in the main window and then you click back to the word sketch.