Originally Posted by
HillRider
Current 50/34 (aka "compact") cranks are so common that the chain interference issue has been long dealt with. Yes, a 53/34 crank can have snagging problems but not a 50/34 the OP is asking about.
It has been "dealt with" in the sense that Shimano tells us not to do it. For example, with the latest 2x11 drivetrain, Shimano dealer manual expressly states that there would be chain rub and noise while riding in the small chain ring with the four smallest cogs.