Every month I download and process a selection of coins from Numista and beginning either 2 or 3 months ago I noticed something I had not seen before at all was now pretty routine - that a lot of ‘recent’ coins have the Type field blank in the export file:

even though when I go to the individual coin pages (for example: N#410263 )
the field does seem to have a value:
Is this expected behavior or a bug? If expected, what is actually happening here?
Thanks in advance for any answers!