Breakpoints not working with eclipse photon

[Antonio Capapé]

When I try to set up a breakpoint I get this error

eclipse.buildId=4.8.0.I20180611-0500

java.version=1.8.0_171
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=es_ES
Framework arguments:  -product org.eclipse.epp.package.java.product
Command-line arguments:  -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.java.product -clean

org.eclipse.ui
Error
Thu Jul 26 08:07:13 CEST 2018
Unhandled event loop exception

java.lang.IncompatibleClassChangeError: Expecting non-static method org.scalaide.ui.internal.editor.ScalaToggleBreakpointAdapter.getTextEditor(Lorg/eclipse/ui/IWorkbenchPart;)Lorg/eclipse/ui/texteditor/ITextEditor;
    at org.scalaide.ui.internal.editor.ScalaToggleBreakpointAdapter.protected$getTextEditor(ScalaToggleBreakpointAdapter.scala:49)
    at org.scalaide.ui.internal.editor.ScalaToggleBreakpointAdapter.translateToMembers(ScalaToggleBreakpointAdapter.scala:153)
    at org.scalaide.ui.internal.editor.ScalaToggleBreakpointAdapter.toggleBreakpoints(ScalaToggleBreakpointAdapter.scala:118)
    at org.eclipse.jdt.internal.debug.ui.actions.ToggleBreakpointAdapter.toggleBreakpointsWithEvent(ToggleBreakpointAdapter.java:1569)
    at org.eclipse.debug.ui.actions.ToggleBreakpointAction.doIt(ToggleBreakpointAction.java:114)
    at org.eclipse.debug.ui.actions.ToggleBreakpointAction.runWithEvent(ToggleBreakpointAction.java:92)
    at org.eclipse.debug.ui.actions.RulerToggleBreakpointActionDelegate.runWithEvent(RulerToggleBreakpointActionDelegate.java:128)
    at org.eclipse.ui.internal.handlers.ActionDelegateHandlerProxy.execute(ActionDelegateHandlerProxy.java:288)
    at org.eclipse.core.commands.Command.executeWithChecks(Command.java:494)
    at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:487)
    at org.eclipse.ui.actions.ContributedAction.runWithEvent(ContributedAction.java:193)
    at org.eclipse.ui.texteditor.AbstractTextEditor$2.triggerAction(AbstractTextEditor.java:3015)
    at org.eclipse.ui.texteditor.AbstractTextEditor$2.mouseDoubleClick(AbstractTextEditor.java:3044)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:197)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5686)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1370)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4940)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4518)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1170)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1059)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:667)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:597)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:656)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:592)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1498)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1471)

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[Cat LLC]

Same problem here but no breakpoints at all can be added.

Can someone take a look at this? debugging Scala with println is a bit 1980s!!!!

[clar...@gmail.com]

I'm also seeing this issue after updating to  4.7.1.v-2_12-201801021323-2dfe808.