This is a frequent problem that I find infuriating, as I pass through a few particular intersections daily where this is common.
See diagram: https://imgur.com/a/9xvG6Tq
I am often car C trying to go straight through. But Car B who is waiting to turn right, blocks the through path by "nose dipping" as I like to call it. They do this so they can see what's coming, I totally understand this. They also can't go because there's cars (purple) turning left so car B has to wait and wait. But some take it too far completely blocking the lane because they have Car A also waiting to turn right so there's this imagined permission to creep even further forward into the path of Car C.
Do you do this as car B? If so you should hand back your license in my humble opinion. It's a scourge on our roads!
There's varying degrees of this (like most motoring annoyances) but it's really common to see the full on blocking of a lane by the person turning right.
Nope. You can "dip" a little, but never so that you're in the path of traffic or potential traffic going straight. A scourge on our roads indeed.