Unable to Apply Variables in Linked Component Nodes

I’ve created a component containing two nodes, and I’ve used this component as a link in several places throughout my workflow. I’d like to make external variables available to the nodes inside the component. Each of the components receives variables with the same name, but the values are different for each instance.

The issue I’m facing is that when I edit the component, the ‘Component input’ and ‘Component output’ nodes appear to be locked. I can select the variables, but the ‘Apply’ and ‘OK’ buttons remain greyed out. This occurs regardless of whether I’ve reset the workflow or not.

Has anyone encountered this before, or could you point out what I might be doing wrong?

Thank you!