Unusual Pumpkin Flowers | Vegetable gardening | Hydroponics farming in India

I have grown 2 pumpkin vines in my terrace garden. both are healthy & growing vigorously. one is normal, having proper male & female flowers but the other one has unusual flowers. they have both male & female organs in the same flower. when the flower bloomed, it was clearly visible that flower has both pollen producing & pollen receiving organs. I have some pictures but I don't know how to attach them with my question. I want to ask you that is this a common problem in pumpkins? I can provide pictures through e-mail or some other option if you want to see.
Thanks.