Periodically while using swiping, the text that shows up will not match what is inserted. For example, I will write the word "three" and the window will show "the" the moment I release my finger. However, the word "three" is inserted.

This is particularly jarring/confusing for fast typing because I get the impression the wrong word is inserted and waste a second looking around the screen to reconcile what actually happened, or start hitting backspace prematurely.