If you mean
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, then...well - the short answer is: not a bug, but rather a limitation.
I am nowhere near savvy enough to explain it properly, but the dumbed down version is: the uncensor only works when a character is completely naked (so-called "State 0"). The reason it works fine in the Editor is because when you load a card the character is loaded in that state. You can actually test it there: load up a character, go to System -> Clothes -> State. Select State 1, hit Apply - looks fine (the "fully clothed" state). Select State 2 (or 4 for undergarments) - no longer fine ("displaced clothes"). From what I understand, there is no "fix" because that is not the uncensor acting up; rather, whoever created the card "acting up" would need to bake the uncensor into their character. In other words, the uncensored penis needs to be a part of the created CHARACTER texture, tailored to it.
What I do is hit
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during the H-scene, select the character I want to "fix" on the left, go to Clothes tab and in there select State 0, making the uncensor "work" again since the character is now naked, then hit F12 again. It is a bandaid, however, since the setting does not persist, you would need to do this every time you start a new H-scene (it will last until the current one ends, though).