M. Gerald Bradford and Larry E. Dahl note that the Church does not have an official position on a number of topics, and there are differences opinions between church members, including leaders.
M. Gerald Bradford and Larry E. Dahl, "Doctrine," in Encyclopedia of Mormonism, ed. Daniel H. Ludlow, 4 vols. (New York: Macmillan, 1992), 1:395, 396-97
There are many subjects about which the scriptures are not clear and about which the Church has made no official pronouncements. In such matters, one can find differences of opinion among Church members and leaders. Until the truth of these matters is made known by revelation, there is room for different levels of understanding and interpretation of unsettled issues.
. . .
Certain Church leaders have written extensively of their understanding of the doctrines of the Church, and, as a consequence, have had a significant influence on what many members believe. These have included Parley P. Pratt, Orson Pratt, James E. Talmage, John A. Widtsoe, B. H. Roberts, Joseph Fielding Smith, and Bruce R. McConkie. Their writings evidence some differences of opinion on unsettled issues, just as different schools of thought exist among Church members in general on certain issues. Examples include effort to reconcile current scientific teachings and revealed truths, to ponder the nature of uncreated intelligence, and to define eternal progression. Latter-day Saints have faith that answers will eventually be revealed, and are urged, in the meantime, to seek knowledge by all available means and to show tolerance toward those espousing differing opinions on such subjects.