Oh, that is happening a lot to me and I wasn’t sure if it was only me!
A lot, I mean, about 80% of my ”não” (I speak Portuguese) are becoming just ”na”. And about 50% of my ”mais” are becoming ”mas”.
“o” and “i” are next to each other at the top row, so I wondered if the keyboard got smaller and my thumb automatic moviment became discalibrated.
But… I started to often see ”na” where it should be ”não” in other people’s texts.
Turns out it is a bigger issue it seems