Here comes the realism vs fun conversation.
Archers have the accuracy of olympians with our modern sci-fi super bows in M&B. All without having stamina, while toting the target acquisition rate of a P90 w/eotech kit wielded by special forces; while also being able to be efficient with any weapon they see on the ground that fits their fancy.
And you are complaining that a shield, that is the singular only counter to these gatling gun super soldiers surrounding non-archers, blocks your one laser-sighted arrow.
Give me a break.
You don't get to have your cake and eat it to when it comes to balancing. Understand that shields counter you, and to counter them, you need to tactically place yourself in order to get around the defense.
You only have 2 options to fix this.
1.) Nerf the accuracy of bows and make shields dimensions perfectly correct to their physical coverage. Pray to RNG gods that you get the arrow going in the right direction, then watch as hits that you could have had against unshielded people; miss because you are salty that there is a counter to archers and want the accuracy of a line-battle musket.
2.) Establish balanced counters so that players always know what to expect against what equipment someone is using and give the power back to the player instead, so that they can work with their advantages.
I enjoy predictability of the latter rather than praying to RNG gods that my arrow doesn't miss a pointblank shot or accidentally kill a team mate, just in the vane desire to want to kill a player using equipment designed to counter me.