The loss in the 1879 LDS edition of the to from the familiar phrase “it came to pass” is, of course, quite unacceptable. Surprisingly, this typo continued in two subsequent LDS editions that derive from the 1879 edition, the 1906 large-print edition and the 1907 vest-pocket edition. On the other hand, the 1888, 1902, and 1905 LDS editions, which also derive from the 1879 edition, corrected this obvious error.
Summary: Completely unacceptable typos are sometimes copied from one edition to another, as in the case of “it came pass” in Alma 19:3.