I uploaded a new version on github.
The popup window can be closed with a click on any point of the window, excepted when the glossary item contains an external link (in this case, the only way to close the window is to click on the x-box).
Back to the same event for 3.1.x and 3.2.0. It was too difficult to manage all exceptions when parsing the parsed text (lot of div, span, etc., with in particular the term
style, which happens to have a special meaning in entomology (my board) and desserves a glossary explicative entry).