Items #7 & #8 in this illustration, upper & lower shield.I looked over the thread and didn't see any of the info you stated. Where are you seeing actual information that says it has a bladder other than some people guessing it is? Just trying to get accurate info.
Other than a verbal wink & nod from a friendly service writer at a Toyota Dealership, there is zero written confirmation (at least that I've been able to find) anywhere with regard to a bladder in the RAV4 Hybrid tank. There is only the real world behavior that mimics the Toyota 2001-2009 Prius issue caused by a fuel bladder in that unit.
Nothing comes remotely close to sufficiently explaining the behavior and experience, with this vehicle, of trying to introduce fuel into the fuel vessel like a fuel bladder.
However, everyone is free to believe whatever they like to believe.
I believe that there is a fuel bladder. My direct hands on experience with the unit, tracking fueling events, both Tank and Total Miles Per Gallon, along with critical thought leaves me comfortable with this belief. My conversation with a Toyota Service Writer, along with his wink & nod posture, provides me with sufficient validation . . . . . for me. That is a bridge too far for others, I'm okay with that.
Other people choose to believe a string of dysfunctional components all conspiring to provide the user with inexplicably, intentionally, flagrantly, wrong, misleading, careless, information that I can only characterize as a Rube Goldberg construct.
I do not participate in these discussions with a goal of offending or winning others over to my point of view.
It's all good.