TTS Speech Multilingual Nerual Voice Changed without any updates: How to get the previous version?

Hello, I'm wondering what changed between yesterday and today for the voice "en-US-AvaMultilingualNeural" on the speech services? The English voice is still the same, but the multilingual is completely different and inconsistent. Was there some change that I am not aware of? If so, is there a way for me to use the older version?

It was very seamless before, but now it seems like it was switched with a completely new voice. 

There also wasn't any update notices whatsoever on: https://learn.microsoft.com/en-us/azure/ai-services/speech-service/releasenotes?tabs=speech-sdk

Is there a way for me to get access to the previous model instead of this new one? 

I also have a clip to hear the differences, but it seems like I can't upload it here.