Need clarification on invisibility and Uncanny Dodge

[silverace99]

The Barbarian's description of Uncanny Dodge reads:

"She cannot be caught flat-footed, even if the attacker is invisible"

The invisible description says:
An invisible creature gains a +2 bonus on attack rolls against sighted opponents, and ignores its opponents' Dexterity bonuses to AC.

Flat-footed and being denied your Dex bonus to AC are two separate things. The Uncanny dodge description doesn't make sense to me, as Invisibility doesn't make a target flat-footed, not having taken a turn in initiative does...

Can someone explain? Thanks...

[Mojorat]

I'm not sure it matters. Uncanny dodge seems to make its intent clear if it calls out invisibility.

[blahpers]

It's likely a glitch from 3.5.