CEP Panel persistence not working

Hello,

As per the CEP docs, adding the below lines should make the CEP panel persistent for a single photoshop session. This does not seem to work, verified on ps versions 20.0.3, 21.1.3 and 21.2.0. I use in-memory redux store to save the extension info which gets cleared on collapse/close of the extension. Is this a bug? Any workaround for this? 

const event = new CSEvent("com.adobe.PhotoshopPersistent", "APPLICATION");
const csInterface = new CSInterface();
event.extensionId = gExtensionId;
csInterface.dispatchEvent(event);