When I construct a text it will add words onto my words. Such as, "I want them done before the boss gets back from vacation" turned into "I wantto them done before the boss gets back from vacation."
"He works at 5" turned into "Heneeds works at 5".
It does it all of the time and annoys the crap out of me. I like predictive text but that is just dumb. It didn't do that before the most recent update (2.3.3).