Get the older plugin from here.
1) Uninstall the current plugin on your phone.
2) Download the APK file from the above link. The one dated March 11 2020.
3) Run the APK file on your phone.
4) Disable auto updates for the plugin on Google play store.
5) Reconnect your Buds+
6) It will now show both batteries. Thank me later.
Been working perfectly fine showing me both batteries for the past month+ since I've done this workaround.
Samsung LISTEN to your customers please. FIX your app to show BOTH batteries and not combine them into a single battery indicator.