Whats the wall construction? Appears to be a poured wall the the white staining is likely efflorescence which was contributory to the top coat failure.

You have to get the moisture out of that wall or it will continue to push off the top layer regardless of bonding agent.

 

I have some questions.
1 is the Blue color material soft or rubbery to the touch?
2 in photo # 2 it appears that there is a blue tint on the brick surface?
3 If you wet it will it get tackey?
From the looks based on the photo's it appears that a bonding agent was used & if the bonding agent was re-emulsion able it would fail due to the presents of moisture. The Stucco is in contact with the Brick walkway.
Also Windows on Wash. is correct efforesence will cause delamination between the two surfaces.
If & when you patch do not use type "S" mortar use a type "N".

 

Hi Clarence,


#1 - the blue color material is hard. Not soft or rubbery.
#2 - I think it's just the lighting. There are some darker mildew spots on the bricks from all the rain that's in south Florida.
#3 - if I blast that surface with a garden hose it does not get tacky.


Here is a picture if I take two steps back. Here you can see this is part of an outdoor bar/kitchen, but it's the same construction as the actual block wall house.

On the other side of this bar is a recess under the sink. Here you can see clearly it's 16X8 concrete blocks and someone put a lousy looking incomplete coat of whatever on it.

 

I can't help but think the blue is some faded paint from long ago which would make me believe the green painted stucco isn't original to the house.

 

I would agree with MARK SR than it is a paint coating being it is hard & does not soften when wet.
The cause is as WINDOWS ON WASH stated moisture causing effervescence behind the thin coating of Stucco.
You will need to stop the water from entering from the counter top area & from the ground level.