Power Window can be Operated After Ignition Switch is Turned OFF Even if Operative Conditions are not Met: Notes
WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
This symptom may occur to the right or left door windows. The flowchart below is for the driver side window. If checking the passenger side window, check using the passenger side's components.