I don't really want to get into an argument about it but what was the reasoning/motivation behind changing it to make shields stack?
I'm not really bothered about the change itself but...it's seems like a change to quite a basic combat mechanic so I don't see why it would just be implemented without any kind of discussion (unless I missed it, if so I'll apologise).
Obv at the end of the day it's the prerogative of all of the devs to change things as they see fit but if those changes affect pvp (in particular), I'd personally like to be expressly told (rather than just by chance, I mean) since it can change the way you play, and maybe how you played for years on live. E.g. as a healer not really needing to wait anymore till someone else's bubble's broken before casting yours.
As I said, I don't think the actual change bothers me, I just don't like the idea of playing one way/using certain strategies etc that don't apply here on RoR anymore cos you don't know combat calculations/mechanics etc have changed. It's a bit like the current dot dmg calculation system (which I know is a bug, not an intentional change, so not complaining

): it makes it mostly pointless to buff a teammates defences or reduce enemy's offensive stats once teammate's been focused and got a million dots on them since the DoT ticks aren't affected. But if you don't know that and play how you always did on live, you're at a disadvantage.
Hopefully that makes sense and doesn't come across as a scream of bias since that's not how it's intended.