Hi Choon Leong,
thanks for the report. We have crossed-check the coordinates with the AIP Malaysia and the coordinates of the LOC antenna are correct so far. So, when this coordinates are wrong, than the AIP Malaysia is wrong.
Here the corresponding note directly copied out of the real-world AIP Malaysia:
051840.7N = 5.311305555
1001725.4E = 100.2903888
That´s exactly what we have in our database and what will be reported from Malaysia to Jeppesen. In this case, we can´t do anything because when, than it´s a real-world issue in the AIP Malaysia but as you see it´s definitively not a navdata issue.
Hope that helps
Richard