When sources are checked, we need to click on the button "apply filters" to get some relevant results. It would great if we didn't have to click OR if we do not have to wait for the pointer to change and become a "hand" for the click to work.
Currently, when we take the mouse pointer on the center of the “Apply filter” and click nothing happen but move the pointer little up/down the pointer become hand and clicking on the “Apply filter” start working.
The perverse effect is that our users may think that the click work with the pointer and that the results are correct while it is not.