ivara navigator stealth nerf? or bug?

[Darkumineru]

i have been playing Ivara for a long time (she was one of the frames that made me stick to Warframe for the early days) 
and its the reasent time i have found myself controlling the arrow longer and longer (now with her energy buff not to long ago) and found out that its getting really annoying that u cant do 2 things that i really feel should be "bugs" not stealth nerfs

1. murmur enemies have ways to just stop a projectile even if u have 6+m punch through (the main enemy to look at is culverin arms)

2. can we get back the ability that at least when using bows or Artemis bow we can hit the same enemy many times when using navigator? we are slowly getting to that power of tank of enemies to not get one shot by navigator unless we hit its weak point and it will have been nice to be able to fly and hit that said weak point even if we missed the hit