The company is yet to reintroduce its salt & vinegar five-pack or its original 10-pack variants, which it dropped last month to focus on higher demand lines of the brand, launched in September.
Retailers were told the lines were being discontinued and the company would be introducing measures to increase production.
P&G confirmed that supply was still falling short of demand in the run-up to Christmas. It did not say when the complete range would be available.
A spokeswoman said: “Nothing has changed since October. We are still having exceptionally high demand for the product and at the moment we are concentrating on the most popular lines.”
Mini Pringles was launched to move the snack into impulse and boost flagging sales.