Wanted to give a diff view of Evernote's response to this bug. I got a message back from Evernote support, within a few hours of emailing them, and had a workable solution until they do release a bug fix. I have used Evernote since 2008 and my whole life is in it, so I was pretty put out by the lack of searchability on my phone. I followed the support email steps to revert to the prior apk, and regained full functionality.
Based on your comments about cause for concern, that users are kept in the dark, and that it is silly this search bug has gone on for weeks, I wanted to let you