I saw this post and that no one replied while looking for something else
I think that analyse button is for analyse mode, which is mostly for analysing say an ongoing game. It’s the same thing that opens/pops up when you use the game navigation arrow, lets you explore the move tree, add stones and marking etc. So it’s unrelated to the ai review.
I think this specifically is what’s kicking in the Ai review for the full game. Once a full review is run, the live/interactive Ai should be available.
Most of the time I would’ve had the full review run anyway, either because it runs when the game is finished or I run it before reviewing say.
I’m not sure if it’s necessary, to have a full review run to have interactive analysis.
Theres cases like relayed games on a demo board have that interactive reviews (no main game to run a full review on), or even live ongoing games that are big reviewed (eg in the Factorio speed championship) that have live analysis running when the game isn’t over to run a full review on say.
Maybe someone else knows more, or is there a few different special cases with slightly different behaviour?
Sgf library vs demo board vs reviews of ongoing/finished games.