That IS a (rather rare) late replacement stock from the 1901 period. They followed the original 30" pattern which included the longer nose, exactly, simply omitting the bar prep. They did not shorten the nose on those stocks to match the then current practice.

The M1899 (32") stock did have the shorter nose. The reason for that stock was to avoid having two profiling setups, since, without the bar inlet, rifle and carbine stocks could be shaped identically. Of course, the band spring and swivel cuts still had to be made but the basic forming was the same from butt to band.

It is unclear why the stock illustrated was made - logic would dictate that if new stocks were needed that 32" ones would have been supplied. One POSSIBLE explanation would be the 'discovery' in stores of a few hundred partly-manufactured stocks from earlier times which were then (1901) completed and used up.