Already tried this mate, it doesn't work. There are no tones now, just vibration. Sometimes there is a tone but its an annoying default one that lasts for 5-6 seconds. I can't even find this tone in the list of the sound files.
Ok just tested it on the latest Miui version 2.6.22 and can confirm the bug still exists here. When you go into Whatsapp settings>notification tone> .. it just brings up the theme menu.
I cant seem to change the Whatsapp tone, initially it was set to a default one which rings for about 5 seconds and now there is just vibration. When I click to change tone within the app, it brings up the Theme menu instead of ringtones.. I'm sure this is a bug. I try to change the tone from...