Is there an issue with the caustics on the right wall?, esp where it meets the floor, where is the caustic light for the floor?
An undulating normal map on the glass panes would help make the wall caustics look more natural.
My guess would be that it is correct — given that apollo can solve the pool caustics generically, I do not see how, barring a bug with bump or somesuch, it would fail to render reflection correctly in the region you mention. I can try a different camera angle to check it, though.
And I totally agree on the glass panes .. I like this scene, so maybe I can find time to play with it some more in future.