android package signing: certificate password not accepted

I've created a fresh Android keystore for my Android kit, Run->Deploy Configurations."Sign Package". I created it with a keystore password and a certificate password. When activating it, I get asked for the keystore password, which seems to work fine, allowing me to choose my certificate by the alias I gave it.

Then when I try to build my app, QtCreator asks me for the certificate password, but seems to reject it and continues endlessly asking for the password. So I can't build the android package.

The failure sounds comparable to bug#10835, except that it is failing on the certificate password rather than the keystore password.

I'm using the latest git version in the master branch (to commit ae67e2a79ef734d41dd7ae07c8b3499429e9db63, qtcreator.pri says 3.0.81), so I have patch ae67e2a79ef734d41dd7ae07c8b3499429e9db63 which fixes bug#10835.

It was working successfully a month or so back when I was performing test of the build. I may have selected "Use Keystore password" for the certificate in those tests (I don't have that test keystore now, which is why I wanted to create a new one).