Same for me. I selected a scorecard and went into the edit mode. Did not change a thing. Pressed back and the scorecard was saved. I did not change a thing but now a few scores are left and the only option left is save.
The additional issue is that I can't actually edit my shots in the web app as there is a server error whenever it tries to update.
What is even worse is that in Garmin connect android app it only shows 1 round of golf, in Garmin golf it shows 3 rounds, and in the web app it shows 4 rounds. Clearly something corrupt and the various components are getting data in different ways.