I was playing a solo Enclavum Baross when I noticed a couple of problems with the shield dome.
First of all, ranged mobs cannot hurt you as long as you are inside the shield. But it doesn’t matter whether they are inside with you or outside, they are not able to shoot you. This is probably a bug.
Secondly, the shield dome does not have the talent that stuns specials, however this mutie runs inside the shield, and then gets stunned by the shield when trying to get out. I thought I had seen this happened in a group match but when I asked my team mates, they could not give me a definitive answer as to whether they did something to the mutie that could have caused it. Now I have confirmation.
Here is the video with examples https://youtu.be/I7sTKvZWsMY