title: Eclipse window builder with blank window and pallette
body: <p>I have Eclipse recently installed and the version is
  Eclipse IDE for Enterprise Java and Web Developers (includes Incubating components)
  Version: 2021-03 (4.19.0)
  Build id: 20210312-0638
  OS: Windows 10, v.10.0, x86_64 / win32
  Java version: 16</p>
  <p>Windows Builder is also installed version 1.9.5 and updated</p>
  <p>I created new Java Project and for example name it Employee. On Employee I click right click and go to the bottom where I pick other and scroll down to Window Builder and pick Swing Designer- Application window.</p>
  <p>Source code in new created java file is ok. Everything is as it should be but when I click on Design tab all windows are blank (Structure, Pallette, Properties) and cannot build anything. As I can see while googleing many people have this problems and there was no idea how to fix it.</p>
  <p>I tried reinstalling eclipse and window builder but no luck.
  <a href="https://i.stack.imgur.com/zLBMJ.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zLBMJ.jpg" alt="source code of java class" /></a>
  <a href="https://i.stack.imgur.com/FoPIC.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FoPIC.jpg" alt="Blank Designer view" /></a>
  <a href="https://i.stack.imgur.com/GzMuA.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/GzMuA.jpg" alt="updated Window Builder" /></a></p>