That's odd! <.< I believe our Android version tends to be the most iffy for little issues among users, probably a number of things that affects it.
I assume this is a fresh install of the game on your phone, like you didn't have v0.17 or previous already installed before by chance? (I noticed for myself there's issues when I try to install the latest version to replace the old one already on my phone. It won't do what you mentioned, but it doesn't add the new content like it should.)
My other guess is try selecting some of the other buttons on the title screen to see if they work right.