In Calc, do not capitalize word just because it was capitalized before.

In calc, If I have a single word capitlized in a cell, then in the same column I want that same word all lower case, LO Calc often automatically capitalizes it. I have been able to correct it sometimes, but it always seems convuluted to me, so I haven’t been able to consistently fix it. The odd thing is that it does not always do this. I have not identified what circumstances cause it or prevent it.