It turns out I’m not the only one missing games from their profile. Watching other 13x13 games in case my opponent showed up - I can’t quite remember his name but I would recognise if it I saw it - I spotted another game that wasn’t added to either of its player’s profiles:
The player icons don’t display either. They do display for other games in their profiles. I tired refreshing it a few times to see if the icons would load but they didn’t and one occasion I got a “internal error - unable to load game data” message.
And just now, while I’ve been typing, another one:
Again, the player icons didn’t load.
I can’t remember if the player icons loaded or not in my missing game but I’m sure I would have noticed if they didn’t.