Bug 42767 Grabbing vertically on add constructor/ gen contructors using fields action
The source actions related to creating constructors is not relayouting properly on resize. The lowermost checkbox is grabbing vertically when it shouldn't be. In the case of the gen. constructors using fields dialog, the upper combobox and label are grabbing vertical space when they shouldn't be either.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/GenerateNewConstructorUsingFieldsAction.java
private IField[] getSelectedFields(IStructuredSelection selection) {
		List elements= selection.toList();
		int nElements= elements.size();
		if (nElements > 0) {
			IField[] res= new IField[nElements];
			ICompilationUnit cu= null;
			for (int i= 0; i < nElements; i++) {
				Object curr= elements.get(i);
				if (curr instanceof IField) {
					IField fld= (IField) curr;
					if (i == 0) {
						
						cu= fld.getCompilationUnit();
						if (cu == null) {
							return null;
						}
					} else if (!cu.equals(fld.getCompilationUnit())) {
						
						return null;
					}
					try {
						if (fld.getDeclaringType().isInterface()) {
							
							return null;
						}
					} catch (JavaModelException e) {
						JavaPlugin.log(e);
						return null;
					}
					res[i]= fld;