1. If your project was created with RVsitebuilder 5.2 , and got updated to RVsitebuilder 5.4. You will be with the Old WYSIWYG.

You need to push a Right Click on the Image, in order to open Image Properties.  

2. If your project is a fresh created in RVsitebuilder 5.4. You’ll get New WYSIWYG.

You need to push a Left Click on the Image, in order to open Image Properties.