Solo Battle Score sheet only shows zeros after completing a Solo Battle gamegame

I did not find out yet what pattern this bug is following. I've seen this zeros last week after completing the Solo Battles released on Monday (not exactly sure whether it was Monday or Wednesday) but after the Friday update this sheet was filled out correctly. in the first 5 Solo Battles this week, the bug was here again.

Up to now, I think it happened in every Solo Battle I've played in the same session (i.e. without closing and restarting the game) if it happened in one Solo Battle game.