Aaah, I wasn't specific enough. That above meant for the girls who come already with the shield from start, or they get it from interview 1st question > what is your preferences. eg. wannabe porn actress., mostly.Bugged how? Haven't played 20.x long enough to notice anything weird, unless you mean even with shield you can't take all actions like you used to.
I had just assumed once you have the shield, Consent can't go down and she'll let you do anything up to her limits/preferences (i.e a model that's not interested in services will still not let you engage sexually).
Now, best explanation is this example:
Before any talk/action, look at: monkey > female > difficulty > breast/buttocks/mouth/crotch - variables (sliders but only representative) , from very low to very high. - you can also re-read values from girl, eg. after personality import, with "evaluate" button.
... I got one girl who had difficulty - very low for buttocks/crotch from the very begging, before "hello".
After I asked her for her modeling preferences .. she said porn actress , got the shield even consent was like 10-15% , and the "possible" favor scale jumped to the roof >100%.
But! , difficulty for body parts also changed to - very high , just because of "shield" - and she was practically unusable for any interaction afterwards. (I even raised her consent to 50,100% , she was still unwilling to do anything)
It's hard to say what is broken , since too many variables/effects , but instant "gratification" (shield) seems broken.
For other girls, who can reach "shield" seems ok , depends on the girl how quickly shield can be reach.