It's just because this bike handles very differently from the one you're used to. Don't be embarrassed! As long as you can ride it you're doing great. Stopping and starting are the hardest points to learn, and if you've had a step-through it's just a balance movement that's completely new to you, nothing to do with your biking skills as such.
Hey, I know my bike inside and outside, and fell over attached to it on the ice yesterday
It's not that easy to stand still on two little patches of rubber, and I have the bruise to prove it.
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett