I believe there is (or very much should be) something like a “principle of least...

I believe there is (or very much should be) something like a “principle of least surprise” in product design. Delight is great but this is unexpected, annoying behavior.

I took from all the comments to experiment with turning off auto-complete. So far its going great. You can still manually select words to substitute or complete but the algorithm won’t change any words by itself.