I'm running android 6.0.1 on a Samsung A5 with evernote v 8.2
Today, while minding my own business and trying to get on with some work, the automatic punctuation decided to stop working.
Double tapping space bar still gives a full stop/period however it doesn't automatically enter a space after that, nor is the next word capitalised. Entering a word via predictive text ends up with something like this: couco - I typed cou and pressed could. I ended up with couco. Very helpful.
I've uninstalled and reinstalled evernote. I changed the keyboard from Samsung default to Gboard. Changed back to samsung keyboard. All with no effect.
Edit- I just installed evernote on my husband's phone - also samsung with 6.0.1 and logged into my account. It works fine there. *cries into keyboard *
Ps. Automatic punctuation works fine here!