This hAPPens because Apple's applications in the background are frozen, and only navigation, music (and being played) can keep background activities, and only one app is allowed to play sound at the same time in the IOS system, which leads to the music in the background being suspended and frozen when WeChat plays voice, and it can't continue playing automatically after WeChat voice ends.

In this case, you can only play music manually after the voice is played, or you can transfer the voice of the other party to text to collect information for communication.