Visual Design Editor does not display layout properly

Visual Design Editor  bug in jdeveloper
you may face this problem

I solved this problem through this steps

1- go to Tool > Preferences select "JSP and HTML Visual Editor".
Tick the checkbox "Show Design Time Messages In Log". Press OK to close Preferences Dialog.


 


Log Window shows, what causing the page to render improperly in design mode. Based on that, further action can be taken.

Best way is to re-initialize Java Server Faces Servlet by registering below listener in web.xml file in ViewController Project. Issue is resolved instantly in majority cases

<listener> 
     <listener-class>com.sun.faces.config.ConfigureListener</listener-class> 
 </listener>   

2- Save web.xml after modification and shuttle the listener to Selected Listeners list in Project Properties like below. Press OK to close dialog & Save All. Re-open broken page or simply click on page. Editor should try to render the page in original format.


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