I am having this same problem with Evernote on my Samsung 6, Android v6.0.1. (Just started a couple of days ago) Just now, I uninstalled, then re-installed Evernote. I did try Toastslayer's suggestion to turn off Predictive Text, which worked, but I do not want to turn it off for convenience sake.
In some cases, numbers are turned into decimal points, for example $3.66 turns into $3..6. In other cases, numbers turn into the $ sign, so $3.66 becomes $$..6
Separately, each time I open Evernote, it scrolls down to the bottom of my notes instead of showing the most recently edited, which is at the top. I will start a separate entry for this problem.
Thanks for any help you can provide!