Icon elements not displayed in App Structure

======== TEMPLATE BUG FORM ========

Wappler Version : 3.0.0 rc2
Operating System : 10.15.5

Expected behavior

After selecting a Font Awesome Icon element, it should be visible in the app structure

Actual behavior

It only shows in code

How to reproduce

Add icon:

Screen Shot 2020-06-19 at 4.48.36 PM972×518 20.8 KB

And check structure

Screen Shot 2020-06-19 at 4.49.46 PM1742×506 88.2 KB