Ah - yes.
Always exactly the same error as @Jeremy_VITAL
ENTRY org.eclipse.e4.ui.workbench 4 0 2020-06-25 21:28:10.645
!MESSAGE
!STACK 0
java.lang.NullPointerException
at org.eclipse.swt.widgets.Control.internal_new_GC(Control.java:2180)
at org.eclipse.swt.graphics.GC.<init>(GC.java:177)
at org.eclipse.swt.graphics.GC.<init>(GC.java:138)
at org.eclipse.swt.custom.CTabFolder.updateTabHeight(CTabFolder.java:3810)
at org.eclipse.swt.custom.CTabFolder.runUpdate(CTabFolder.java:3843)
at org.eclipse.swt.custom.CTabFolder.lambda$3(CTabFolder.java:3833)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4068)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3735)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.e4.ui.internal.workbench.swt.E4Application.start(E4Application.java:165)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:199)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:391)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:246)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:595)
at org.eclipse.equinox.launcher.Main.run(Main.java:1501)
And yes, i’m on the latest version.