Bug 202474 [Forms] Create a resource manager to share the bold font
If a FormToolkit is passed into FormEditor it is disposed upon disposal of the editor even though it may be shared.
bundles/org.eclipse.ui.forms/src/org/eclipse/ui/forms/widgets/FormText.java
loc.rowHeight = 0;
				loc.indent = p.getIndent();
				loc.x = p.getIndent();
				ParagraphSegment[] segments = p.getSegments();
				if (segments.length > 0) {
					selectableInTheLastRow = false;
					int pwidth = 0;
					for (int j = 0; j < segments.length; j++) {
						ParagraphSegment segment = segments[j];
						segment.advanceLocator(gc, wHint, loc, resourceTable,
								false);
						if (wHint != SWT.DEFAULT) {
							width = Math.max(width, loc.width);
						} else {
							pwidth += loc.width;
						}
						if (segment instanceof IFocusSelectable)
							selectableInTheLastRow = true;
					}
					if (wHint == SWT.DEFAULT)
						width = Math.max(width, pwidth);
					loc.y += loc.rowHeight;
				} else {
					
					loc.y += lineHeight;
				}
			}
			gc.dispose();
			if (selectableInTheLastRow)
				loc.y += 1;