yes, pots are like they used to be stack wise,
g heal pots dont stack after you fail 1 or save happens
g poison stops stacking randomly and after fail but save sometimes breaks the stack chain
the only potion i have noted to stack universally
is the 1 pot to totally change hue. the cure pots
I think when all pots changed, they should have all had there hues amped just like cure,
I think (if its not to late) heal pots/ g poison / all stat pots should be worked JUST like the cures, so this solves all the stacking problems, which annoy Everyone.
Wall pots were probably purposely set to non stacking so people can't macro wall pots

so just note i wasn't talking about wall pots any of the time in this post