Pumpkins and Watermelons do not grow on all blocks

Watermelons and pumpkins do not grow on waterlogged blocks. If you plant a seed and it grows, no matter how long you wait, it will not grow on a waterlogged block. Maybe it is just a slap, because I have fully tested the issue, I got things to do, places to be. If it is just with all slaps, stairs, ect. Pumpkins and melons should grow on them anyway