Cannot undo any operation, undoableEditHappened, jgraphx too new

[xmik]

While editing any .sce file in Scilab, undo operation (either invoked with Ctrl+Z or by clicking Edit->Undo) does not work. The error is then:

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: \
   class javax.swing.text.AbstractDocument$DefaultDocumentEventUndoableWrapper \
   cannot be cast to class javax.swing.text.AbstractDocument$DefaultDocumentEvent \
   (javax.swing.text.AbstractDocument$DefaultDocumentEventUndoableWrapper and \
   javax.swing.text.AbstractDocument$DefaultDocumentEvent are in module \
   java.desktop of loader 'bootstrap')
	at org.scilab.modules.scinotes.CompoundUndoManager.
            undoableEditHappened(Unknown Source)

This happens probably because too new version of jgraphx is installed, source. The deb package name for this is: libjgraphx-java and its installed version is: 2.1.0.7-2. This page suggests that 1.8.0.0 version is needed.