Yes, this is exactly what happens to me. I think if you watch carefully, what you voice-to-text may appear correctly as you speak. But it may be correct only for the first half of your sentence. As you speak the second half of the sentence it seems to sometimes rewrite the first half of the sentence as if it is re-interpreting the meaning of what you intended to say in the full sentence.
This is AI at its worst. It is too smart for it’s own good. By this I mean it accurately transcribes the words you intend to use, but then changes them according to a meaning that it calculates must’ve been your intention.
I believe this results from the program mis-hearing one of the words you used which causes it to proceed to re-interpret your full meaning based on the wrongly heard word.
In the process of doing this, it actually goes back and rewrites the early part of your sentence to conform to the new interpretation of your meaning.
This is AI based on very poorly formulated rules.