If I keep pedaling when shifting up the front chainring, it would fail. Moreover, the chain keeps rubbing with the chainrings and produces many noises. Thus, I have to stop pedaling for around one second when shifting up.
My bike comes with a 'Shimano Sora, band-type 34.9mm' front derailleur. The chainrings are 50/34T.
I am new to road bike and don't know whether it is normal. I am not sure does it indicate wearing or misconfiguration. If it is normal, is the practice of stop pedaling the best technique when shifting up?