Hopefully fixed for the next release, though due to how lipMod works, there isn't much I can do in-game to fix the extra lipMod value you have in the save. So you will have to manually set the lipMod value in the console (assuming you have no other values affecting the lipMod):
As for the fix in the next release: Face mimbranes will no longer directly manipulate the lipMod value (any affected saves will have the lipMod decreased depending on the feed value, where applicable). Instead, the lipRating() will use the face mimbrane's puffiness value to superficially add a bonus value to the size rating (from +0 to +3). The appearance screen already uses the puffiness value for the description, so it isn't anything particularly new, but it at least removes any potential value bugs when it comes to how lipMod is used everywhere else in the game. If the lip size bonus value is too drastic, it can always be re-scaled without affecting the actual lipMod value (originally, mimbrane lip swelling is +0 to +2), though I'd rather have it be consistent throughout.