Chromecast resume after pause fails

[Pete C]

• Poweramp v3-build-830-play.
• Sony Xperia XZ1.
• Android 9.
• Chromecast 1st gen and Cromecast audio.

When playing to chromecast, after a significant pause time (minutes rather than seconds), the playback fails. No sound is produced (after a short burst, sometimes) and the graphic plays forward a short amount and skips back. Have to disconnect and reconnect to resume. I had no instance of this with build 826.

Added: IIRC there was an option in the chromecast output settings, something like "alternative chromecast handling", that I'd enabled and now seems to have disappeared? Not sure if that might be relevant.