I noticed that when calling directly to the java file "dist.jar" using the java hot spot, the SceneBuilder script runs smoothly ("java-jar / opt / SceneBuilder / app / dist.jar"). Thus, one way to solve this problem is to change the file "/usr/share/applications/SceneBuilder.desktop" and change the line:
Exec=/opt/SceneBuilder/SceneBuilder
for
Exec=java -jar /opt/SceneBuilder/app/dist.jar
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