As you can see, it was floating.
Why did it happen?
A few aircraft sometimes do this. I think it’s just a general known bug that’s known. Luckily it’s not a major noticable bug unless you’re Mary Poppins-ing it to the sky.
Although there wasn’t any reply or much info on these threads, they have been reported previously.
It’s an old model and there’s some issues with it, the issue should hopefully be fixed once its had a rework. There’s a few other aircraft that have their front gear off the ground.