Bug: Font size not working

Expected behavior

When pressing the button the font size, this app should be able to make the font size as selected by the user.

Actual behavior

When pressing the button the font size, this app should be able to make the font size, but this does not work at all, I've tried repeatedly.

How to reproduce

• Install Yaxim - XMPP/Jabber Client

• Open

• Click setting

• Click font size

• Not working

• Browser: Yaxim - XMPP/Jabber Client version 0.9.2

• Operating system: Android 5.1

• Smartphone: Oppo Neo 7

Recording Of The Bug