It is fixed in the latest version (see attached image).
ED has no version number in their manuals, but you can check the PDF document properties (File -> Properties -> Created) to find out what version you have. The latest one, which is included in 1.2.15 P-51D doc folder, has a creation timestamp of 18.02.2015 07:44:21.
Note that in 1.2.15 the TF-51D doc folder still contained an old version (2012) of the document.