Hi,

I got this behavior once and I didn't tested again.

I started the hosted-engine deployment using cockpit webui, the process went smoothly, the LocalHosttedEngine VM  was created, at that time I left the console for sometime.
When I get back the cockpit console was closed due to idle session timeout, I reconnect, and the hosted-engine wizard had disappeared and I didn't find a way to get it back, the only choice was to start the process again even if the console was showing that the host was registered with a hosted engine Manager, so I couldn't continue the deployment (the storage phase).
I had to stop the LocalHosttedEngine VM, delete it's temporary disk, then restart the deployment again and this time I stick with cockpit webui to get it done.

Regards.