I made another account to see what the auto vacation is like, for a new user, but also to see what it’s like with the 0 move examples. Just challenging inactive (mostly - people with no games) at the bottom of the ladder.
When auto vacation happens to you, it’s nice, you get a popup to tell you
though you do have to manually end the vacation mode, which if you’re a new user, it probably isn’t self explanatory. Maybe add something like “you can deactivate this in settings”.
I think if you play for about a week you can build up a day or so of vacation, and I feel like it’s a nice catch if you genuinely forgot. For instance I was busy at the weekend with a Go event, I kind of forgot I was doing this experiment, and vacation kicked in in a game - very helpful.
On topic of the OP, you can have accounts that sit in the ladder inactive, haven’t played games, maybe haven’t logged in in six months
and they’ll be on vacation for the next two weeks. Though I’d extend it to cover zero or one move games, both cases you’re waiting on the opponents first move.
You technically can just cancel and move on and challenge someone else, but it pushes the issue onto the next user and I wonder if that’s even intuitive to new users. Like with the first turn escaping reports, you don’t have to sit around waiting for your opponent that isn’t there, you can cancel, provided they didn’t play and then leave I suppose.
On OGS we have a red button to do it, on the apps (like the one I’m testing with) it’s hidden behind some dots in a menu.
Random side note, this message about seeing an undo for the first time will show up on any board if you don’t dismiss it
and it was the opponent requesting the undo, so the wording is a bit off.