A master piece! Super hard for all height, but doable!! Good for mid season to winter. A trickery for the match at the crux: take the right crimp as an undercling and directly put your right heel under it instead on the bad spot where everyone else is putting it.
Rain sucks, but broken holds suck even more. Remember, never climb on wet rock in Fontainebleau.
The sandstone becomes brittle, and pulling on it will ruin classic problems. Drying it doesn't help, because it's still wet and weak inside.
All you can do is wait for better conditions.