So, my issue definitely seems to be similar.
I type a note, I make a typing error, I go back to the word and select the suggested word Evernote offers. It adds the new complete word and leaves the original error. If I am halfway through the word, I get the new word in the middle of the wrong word.
Alternatively, I half type a word, and it suggests what I could be typing, click the suggestion and it puts the word in twice. Two complete versions of the same word.
I downloaded the google keyboard to see if that solves it. Not sure why, as I am not using the swype function of the keyboard, I am individual letter typing (fat thumbs, hence the mistakes!).
I'd say this issue started around the summer update for me. I am using a Galaxy S8 edge. It says Evernote is up to date.
Kinda need you to sort it or I won't be the first person to complete a Novel via Evernote... no pressure... 🤣🤣