Updated: Nov 13, 2019
Google looks to be ending Google Voice's ability to send voicemail transcripts to your phone's messaging app. The reason behind doing so seems to be that carriers were blocking the messages because they were automated as well as containing transcripts from robocalls at times. Users can still retrieve voicemails via email if needed. The changes are set to take place on August 9th, 2019.
Below is the message sent out by Google Voice's team:
©2018 Google LLC, used with permission. Google and the Google logo are registered trademarks of Google LLC.