As an arial, the first time I go up into the "flying" room, I see some blue text that looks like it's out of place. It doesn't happen after the first time. Log:

<100%hp 100%m 94%mv 1300tnl 2 PM> u
High Above the Cavern, in a Vault

{Exits: down}
You soar up into the heights of the cracked ceiling.
(You have gained 25 experience points.)

learned to craft lightweight items specifically for their wings.have

n/t