When I click on the 'View talk page' button at the bottom of any non-mainspace page on the Android app, it gives me a 'Bad title' error.

It seems it is just trying to append 'Talk:' to the start of the page name as when I try and view the talk page of my userpage it sends me to https://en.wikipedia.org/wiki/Talk:User:Nintendofan885 rather than https://en.wikipedia.org/wiki/User_talk:Nintendofan885

App version: Version 2.7.50330-r-2020-08-04
Android version: EMUI 9.1.0.168(C432E8R1P4)

Steps to reproduce

1. Go to any non-mainspace page that isn't a talk page on the Android app
2. Scroll down until you see the 'View talk page' button
3. Click on it and notice it gives you a 'Bad title' error