you can use the stock app if you uninstall the lastest upgrade to the app Gboard in Google play. that's what I did and now my gifs work
on another thread they uninstalled the updates to the Gboard app and it started working again. when I called TMobile and they then called OnePlus...
I called TMobile and they called OnePlus and then returned to tell me to download Google messenger and use that as my default messaging app. so dumb.
same I'm so frustrated
same on the 7t
I'm super annoyed this is happening to my 7T