Firstly, the issue reported in the link at the bottom of this post is not "resolved".
In regard to individual and group message notifications the issue is not resolved and the feature was not "moved". Or maybe it was moved out of the "Contacts" app and into the "Messaging" app. But that means it was "removed" from the "Contacts" app and the "feature" added to the "Messaging" app falls far short of the original capability in the "Contacts" app.
I used to be able to set an "individual text notification sound" for each contact in the "Contacts" app exactly the way I set an "individual ringtone" for each contact in the "Contacts" app. In fact, the two settings used to be right next to each other in the "Contacts" app and the text notification setting got removed from the "Contacts" app somewhere along the way.
I understand your solution allows me to set a specific notification sound for a "conversation" however the "Contacts" app previously did but does not now allow me to set a specific text notification sound for an "individual contact" in addition to a separate and specific ringtone for an "individual contact".
In the past I was able to set an individual text sound in the Contacts app the same way I set an individual ringtone and when this was done the individual text notification would play for that specific person even in a "group" "conversation".
In other words, if there was a text message conversation with multiple people in the recipient list and one of them was my wife for which I had specified an individual text notification sound then every time my wife replied to that group text I would hear her individually specified notification sound and I would hear the "default" notification sound for everyone else in the group text message.
Similarly, if more than one person was assigned an "individual" text notification sound then I would hear a different sound for each person on the group text ... one conversation, 4 people in the chat and 4 unique sounds not one sound for the "conversation".
I want to be able to distinguish when my wife sends me a text regardless of in what "group chat" it happens. This is the way it used to work but it doesn't work this way anymore. The way it works today I have to set a new sound for every conversation that includes my wife but then that sound plays for everyone who responds to the chat and not just my wife.
The following "solution" is not correct.
Yes, the Contacts app changed a while back and I want it the individual text tone feature back.
Previously it did not matter if my wife responded directly to me or to a group text. A text from her would play the individual text tone regardless of whether or not she was responding directly to me or to a group text even if it was started by someone else. And, of course, not just the wife, it worked for anyone who I gave an individually assigned text tone in the Contacts app.
As far as I know Apple iMessage is the only platform that provides the ability to "unsubscribe" from a group text. Even then, I'm not sure it's supported by Apple if one of the phones in the group text is an Android or doesn't have iMessage. The only way I know of to "leave" a group text on Android is to delete the conversation and block the people who update it, unless there is some third party text messaging app for Android that supports iMessage.
Thanks. Yes it was a long time ago and I was hoping since I just updated from a GS7 to a GS10e that it might be fixed in the later version but nope. I'll check out TEXTRA.