There are two editions of the Catechism. The first edition came out in 1992. It was originally written in French and then translated into other languages. Once that came out, they set to work on the authoritative Latin edition, which was promulgated in 1997. Once that came out, there were some mostly minor modifications that needed to be made to the English translation to bring it closer in line with the authoritative Latin edition.
The SCBorromeo site that hosts the text of the Catechism online conveniently has posted all of the changes that were made:
You can see that paragraph 2358 is one of the ones that was modified:
2358 The second sentence of this paragraph is to be changed to read as follows:
[INDENT]This inclination, which is objectively disordered, constitutes for most of them a trial. [/INDENT]