Incomplete Let's Encrypt certificate

[greg]

Greetings

I'm using the build-in certificate client of Proxmox for the GUI.
I noticed that randomly I end up with either a complete, working certificate, or a incomplete certificate (not full chain).

I've checked with https://www.sslshopper.com/ssl-checker.html

Re-ordering a certificate from the node which has an incomplete one usually fixes the problem.

Anybody noticed that?

Thanks in advance

Regards