Trigger : see responses: use select all invert selection instead of select all

[dev-mansonthomas]

In a trigger, people have sent various response, with the possiblity A1, A2, A3, A4 (with multiple response possible)

Lets say I want to sent an email to people answering A1, A2, A3. I click A1, select all : ok I click A2, select all: Not OK: people already selected from A1 are deselected, and the rest is selected. Expected behaviour : select all

ex: https://redcall.minutis.croix-rouge.fr/campaign/544 After select all A1, I click on A2 and get this screen :

Then I click on A2, and select all, and I get this :

while all voluteers should be selected (and the select all switch should be on)

[dev-mansonthomas]

Also, when I select people from A1, goes to A2, select more people, go to A3 select more people.

It should make a union of the selection, the current behaviour is weird some are kept, some are unselected

[dev-mansonthomas]

On this particular case, I've no other choice than going through the 159 answer and select all responses that include A1 to A6