Forge uiModification not working for JSM with GIC viewType

Forge uiModifications not working for JSM with GIC viewType but working in portal

For example, Following is the JSM project and ui modifications are working in GIC view

{
  projectId: "10034",
  issueTypeId: "10042",
  viewType: "GIC"
}

Following is working fine in JSM portal

{
  issueTypeId: null,
  portalId: "1",
  projectId: null,
  requestTypeId: "2",
  viewType: "JSMRequestCreate"
}

Is this a limitation from JSM?