STUDIO 9 Problem with Designer

I updated Studio to version 9.0 and the platform to version 7.0.3.
When I modify a view with the designer (adding an attribute in a form for example), a bug occurs and erases all the properties of the following attributes.
Do you know about this problem?

Thank you for your reply

Could you share the idea.log file? You can find it using Help > Show log in Finder/Explorer.