Some users have reported the following error when using DbVisualizer on Linux with the OpenJDK Java.

java.lang.StackOverflowError
   at java.awt.AWTEventMulticaster.componentResized(AWTEventMulticaster.java:159)
   at java.awt.AWTEventMulticaster.componentResized(AWTEventMulticaster.java:159)
   at java.awt.AWTEventMulticaster.componentResized(AWTEventMulticaster.java:159)
   at java.awt.AWTEventMulticaster.componentResized(AWTEventMulticaster.java:159)
   ...

The solution is to upgrade to the official Oracle Java 8 and then change in DbVisualizer to use the other Java version. Check How do I change the Java version that DbVisualizer use for instructions.