When I open the app and enter my password, it validates successfully, but then I'm prompted to enter it again. Entering the password a second time gets new into the app. There are no error messages - it says the password is correct both times.
Please keep an eye on this, and if you happen to see it in beta 6 and are able to produce it reliably, let me know. Otherwise, if you can note what you see or were doing just before it didn't accept the password, please let me know so we can watch for it here.
