How can I visualize the different popups from my canvas?

Hi @FernandoMartin ,

I am not sure if here if in your question is  meant the display the 2d popup widgets. If yes then , what to mention the following workflow:

In the normal case when you work in design of one popup widget you need that it will be visible and all other popups should be hidden.

When you select a popup widget on the left in the widget tree you can see the property panel of it . Then you have the option to hide it or make it visible. 

So when it is hidden then you can not see it in the Editor UI until you unhide it. 

When you want to work on a popup  say A you need to make it visible - and to have better visibilty all other popup should be unvisible (e.g. B, C, D)