Forge Launches are not Correctly Removed

• Start Forge in a new workspace
• Stop Forge
• Start Forge again
  => 2 errors in Error View

This is the stack trace:

java.lang.NullPointerException
at org.jboss.tools.forge.core.process.ForgeLaunchHelper$ForgeLaunchListener.launchRemoved(ForgeLaunchHelper.java:184)
at org.eclipse.debug.internal.core.LaunchManager$LaunchNotifier.run(LaunchManager.java:443)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.debug.internal.core.LaunchManager$LaunchNotifier.notify(LaunchManager.java:428)
at org.eclipse.debug.internal.core.LaunchManager.fireUpdate(LaunchManager.java:1017)
at org.eclipse.debug.internal.core.LaunchManager.removeLaunch(LaunchManager.java:2224)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationManager.removeTerminatedLaunches(LaunchConfigurationManager.java:329)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationManager.launchAdded(LaunchConfigurationManager.java:315)
at org.eclipse.debug.internal.core.LaunchManager$LaunchNotifier.run(LaunchManager.java:440)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.debug.internal.core.LaunchManager$LaunchNotifier.notify(LaunchManager.java:428)
at org.eclipse.debug.internal.core.LaunchManager.fireUpdate(LaunchManager.java:1017)
at org.eclipse.debug.internal.core.LaunchManager.addLaunch(LaunchManager.java:688)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:844)
at org.jboss.tools.forge.core.process.ForgeLaunchHelper.doLaunch(ForgeLaunchHelper.java:69)
at org.jboss.tools.forge.core.process.ForgeLaunchHelper.launch(ForgeLaunchHelper.java:53)
at org.jboss.tools.forge.core.process.ForgeAbstractRuntime.start(ForgeAbstractRuntime.java:50)
at org.jboss.tools.forge.ui.util.ForgeHelper$1.run(ForgeHelper.java:41)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)