The article in the link states that some records are " missing". This includes that of William Ewart Gladstone. Well all I can say is that it took me a couple of minutes to locate his record by simply using a wildcard. Searching for Gladstone in 1898 produces no results but searching for Glad* produces 2 pages, his being on the second page. I also think that when a search produces pages of results it is wrong to assume as things stand that they are going to be in alphabetical or number order!
William
Which reminds me, the calendar pages were indexed by 1st three letters only which is why the old system returned so many pages.
Based on that, I searched for my gg-grandfather's will in 1933, searching on the 1st 3 letters of his surname returned too many pages, adding in a 4th letter reduced the number of pages down to four but in the sequence 324, 323, 325, 322.
Moving onto 1934, the 4 pages were in the order 333, 334, 335, 332
A step forward for me but we shouldn't have to find a work around.
A search on the full surname of 5 letters still gives no pages.