I discovered a very weird behavior today with 6.9b2. I had not tried this with previous versions so I don't know when it was introduced.
While playing with my keybindings today, I removed the keybinding for "Paste to Evernote" as shown in the attachment. After doing this, I find that the "a" key (without any modifiers!) gets bound to this action, so I can't type anything, as soon as I type an "a", Evernote gets brought to the front and a new note with whatever I have in the clipboard gets created.
I didn't realize immediately what had triggered this problem, so I initially restarted