Hi Oliver
Is this a emonSD or a self-build?
Can you post the “server info” from the admin page so we have more info?
Have you tried clearing the browser cache (often CTRL-F5 will do)?
Just to confirm the issue you see is only when using the “&embed=1” parameter, if you remove that from the url, the exact same url works perfectly ok, until you add the “&embed=1” back again, correct?
[edit] Actually, just tried this myself and confirmed the issue is there on one of my test servers too.
I’ve opened an issue on github, hopefully @TrystanLea or @emrys will pick it up.