front wheel sticks when steering

Hello
I'm trying to find an older post for a problem on Q4 that front wheel sticks when you turn the steering.
Anyone that remembers what can cause it?

I don't remember to have read about such issue. Can you explain in a little more detail about it? Front wheels lock and don't rotate, when you rotate steering wheel?
I tried to find something about such issue in the forum and didn't find anything, but I'm not sure exactly what to look for.

Could it be the rubber flexipipe to the caliper kinking or collapsing when the steering is turned?
Or, a wheel bearing?