Bug 48975 Comment Formatter should compare values using equals()
Currently, the preference values are read and compared by reference, which only works in special circumstances.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/comment/MultiCommentRegion.java
return ""; 
			else if (!next.hasAttribute(COMMENT_CODE) && previous.hasAttribute(COMMENT_CODE))
				return ""; 
			else if (next.hasAttribute(COMMENT_CLOSE) && previous.getLength() <= 2 && !isCommentWord(previous))
				return ""; 
			else if (previous.hasAttribute(COMMENT_OPEN) && next.getLength() <= 2 && !isCommentWord(next))
				return ""; 
		}
		return super.getDelimiter(previous, next);
	}
	/**
	 * Should root tag parameter descriptions be indented after the tag?
	 * 
	 * @return <code>true</code> iff the descriptions should be indented after,
	 *               <code>false</code> otherwise.
	 */
	protected final boolean isIndentDescriptions() {
		return fIndentDescriptions;
	}
	/**
	 * Should root tag parameter descriptions be indented?
	 * 
	 * @return <code>true</code> iff the root tags should be indented,
	 *               <code>false</code> otherwise.
	 */
	protected final boolean isIndentRoots() {
		return fIndentRoots;
	}
	/**
	 * Marks the comment ranges confined by html tags.