qt - qcheckbox not changing checked state when clicked on

I have been developing a GUI, and have run into an issue (or possible bug) with a QCheckBox

Adding a QCheckBox component to my form, compiling and running it has no issues.

Problem:

However when clicking on the checkbox, no visible feedback is displayed.

I added a listener for the clicked(bool) signal, used a the debug output to display the current state, which does change.

More Info:

Only 3 settings are changed on the checkbox:

1. Component Text

2. Component Name

3. Component Checkedstate : Checked.

I added another checkbox to the page, recopiled and ran it, without changing anything. Again, this new checkbox does not respond to changes.

Furthermore, I created a new project, added only a checkbox, compiled and ran it. Had no issues displaying the state change.

Must be an issue with my project.

Output of stateChanged(int) and clicked(bool) signals:

qDebug() output

QCHECKBOX STATE (stateChanged):  "2"
QCHECKBOX STATE (clicked):  "checked"
QCHECKBOX STATE (stateChanged):  "0"
QCHECKBOX STATE (clicked):  "unchecked"
QCHECKBOX STATE (stateChanged):  "2"
QCHECKBOX STATE (clicked):  "checked"
QCHECKBOX STATE (stateChanged):  "0"
QCHECKBOX STATE (clicked):  "unchecked"

p.s. if any additional project info is required, feel free to leave a comment