There should be a way to automatically upload proguard mappings to Google Play console
This is now included in version 1.6 of the plugin.
It looks like mapping upload is broken on Google side (Publishing API) - file is uploaded correctly by Jenkins plugin (no error) but does not appear in Google Play Console anymore. Manual upload in Google Play Console still works. We noticed issue 2 days ago and last successful upload was 10 days ago. Has anyone else noticed the issue? Anyone knows where to report a Publishing API issue on Google side? Couldn't fine anything useful googling. Thanks! /cc c_fry
You should contact Google Play Developer Support by chat or email — it should be easy to find from the Developer Console.
Ok, I contacted support via Google Play Console then follow up via email with all the details including API calls and responses in Publishing API. Hopefully they fix it soon.
Google has just confirmed the issue is fixed. I verified it works fine for me.