"When user clicks outside..."

Hi folks.

I was going to ask a question as I couldn't find any topic  on this. But after several hours I've concluded that there is a bug.

Background

I have created my own Glossary, The items are shapes, which change state when clicked and also makes a text box (the definition) display. When the user clicks another item, I need the original shape to return to normal and hide the first definition. 

Issue

It all seems to work well, until you select the first item again; it leaves the previous text box on screen. Changing the order of the items and the first "click outside" trigger is the problem. 

Solution

Place a shape off screen, and set a trigger changing its state when user clicks outside this shape - and place this BEFORE any other  "When user clicks outside..." trigger.