Make thumbnails display

platform/core/src/classes/CommandsManager.js

@@ -115,7 +115,7 @@ export class CommandsManager {
    * @param {String} commandName - Command to find
    * @param {String} [contextName] - Specific command to look in. Defaults to current activeContexts
    */
-  getCommand(commandName, contextName) {
+  getCommand = (commandName, contextName) => {
     let contexts = [];
 
     if (contextName) {
@@ -145,7 +145,7 @@ export class CommandsManager {
     });
 
     return foundCommand;
-  }
+  };
 
   /**
    *

platform/core/src/services/DisplaySetService/DisplaySetService.js

@@ -131,8 +131,9 @@ export default class DisplaySetService {
   };
 
   getDisplaySetByUID = displaySetInstanceUid => {
-    return this.displaySets.find(
-      displaySet => displaySet.displaySetInstanceUid === displaySetInstanceUid
+    // TODO: Why is this searching active, not just displaySets?
+    return displaySetCache.find(
+      displaySet => displaySet.displaySetInstanceUID === displaySetInstanceUid
     );
   };