Bug 43207 Javadoc info for content assist only shown once
I20030916 Javadoc infos for content assist are only shown the first time an editor is opened. Afterwards, no javadoc is shown any more. - open a java source file (e.g. public class A { }) - Press Ctrl+Space to invoke content assist => works: selection in proposal list shows javadoc hover (if javadoc available) - Press Esc, press Ctrl+Space again => fails: selection in proposal list does not make any javadocs appear
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/link/contentassist/CompletionProposalPopup2.java
* 
	 * @param offset the offset
	 * @return the completion proposals available at this offset
	 */
	private ICompletionProposal[] computeProposals(int offset) {
		return fContentAssistant.computeCompletionProposals(fViewer, offset);
	}
	
	/**
	 * Returns the error message.
	 * 
	 * @return the error message
	 */
	private String getErrorMessage() {
		return fContentAssistant.getErrorMessage();
	}
	
	/**
	 * Creates the proposal selector.
	 */
	private void createProposalSelector() {
		if (Helper2.okToUse(fProposalShell))
			return;
			
		Control control= fViewer.getTextWidget();
		fProposalShell= new Shell(control.getShell(), SWT.ON_TOP);
		fProposalTable= new Table(fProposalShell, SWT.H_SCROLL | SWT.V_SCROLL);
		
		fProposalTable.setLocation(0, 0);
		if (fAdditionalInfoController != null)