One of my 2010s was a regular 'soaker' for the first few months of life at the breeder's place. She's never once soaked for me, and is either out on her perches or in her hides. I guess a change of venue made her decide that she didn't feel like soaking anymore.
They can just be weird sometimes, no biggie.
Make sure you don't have mites, as this can be a cause of soaking behavior. They are easy to spot if you keep your snakes on paper towels.