Resolved the problem with paths in default values for workflow parameters.

frontend/src/js/page/wb-launch-workflow-page.js

@@ -10,6 +10,7 @@ import linkState from 'linkstate';
 import wbParseWorkflowDef from 'wb-parse-workflow-def';
 import { wbParseWorkflowInputs, wbSubmitContainerRequest } from 'wb-submit-container-request';
 import WBWorkflowInput from 'wb-workflow-input';
+import { parseKeepRef } from 'wb-process-misc';
 
 class WBLaunchWorkflowPage extends Component {
   constructor(...args) {
@@ -30,7 +31,7 @@ class WBLaunchWorkflowPage extends Component {
         const def = wbParseWorkflowDef(xhr.response.definition);
         const inputs = {};
         const main = def['$graph'].find(a => (a.id === '#main'));
-        main.inputs.map(a => (inputs[a.id] = JSON.stringify(a.default)));
+        main.inputs.map(a => (inputs[a.id] = JSON.stringify(parseKeepRef(a.default))));
         this.setState({
         'workflow': xhr.response,
         'workflowDefinition': def,