Cockpit: SSL/TLS certificate update is not complete (no problem with Nethgui)

I could agree, but I for sure expect many support request like “I’ve configured Let’s Encrypt but I still see the old certificate on cockpit”.
We had plenty of such requests on the NethGUI when the reload async fails.

Probably I prefer the current behavior but less support requests.
Maybe @nrauso or @filippo_carletti have different opinions.