I noticed that the heading of the fixes pertaining to the ILS approach into KMCO17L are not correct. The IXEG FMS shows a heading of 172 on the ILS; they should read between 184-186 according to real world navdata. This also occurred with fixes on the ILS of KDTW22L. I'm on the stock navdata of the IXEG, i.e. 1509.
The problem corrects itself when I get close by the first approach fix. All the 172's turn into the right heading.
I really cannot tell if this is part of the issues with VNAV in general.