UI issue of Check boxes in FLUTTER DART

I have of many checkboxes as You can see the image uploaded, please see the image first.

Now the problem is that you can see the 3 cards views Conditions, Allergies and Past Surgeries. and all of these cards contains checkboxes and now what happens is that when I check or uncheck any box in Conditions Card so it works properly, but when I check or uncheck the box in allergies or Past Surgeries card the UI of the box does not change until I click on the Conditions Box.

What am I doing wrong and I will share the checkboxes codes also.

CONDITIONS

Checkbox(
              value: condition.selected,
              onChanged: (value) {
                setState(() {
                  _conditions[i].selected = value;
                });
              }),

ALLERGIES

Checkbox(
              value: allergy.selected,
              onChanged: (value) {
                _allergies[i].selected = value;

              }),

PAST SURGERIES

Checkbox(
              value: surgery.selected,
              onChanged: (value) {
                _surgeries[i].selected = value;
              
              }),

PLEASE HELP ME...