which version of foreman are you using? I just tested it manually and it works.
it's also automatically tested in hosts_controller_test.rb:93

I am using 1.7.0, and if it matters, my VM is in the "Digital Ocean" Compute Resource...

• Hosts -> All Hosts
• Click a Host to bring up the "host show" details
  • on the hosts screen I am generally clicking around (tabs on the left), but I doubt that matters
• Click the Delete button at the top
• Get a "Host Not Found" page (url is /hosts/system-i-deleted.domain.com)

ok, this should be fixed in 1.8.0, as I've tested this and it works as expected in the develop version of 1.8.0, I guess it was fixed along the way.

Very little has changed between 1.7 and 1.8 at the moment, and I can't think of such a change off the top of my head.

Not sure if this will work...

https://docs.google.com/a/lark-it.com/file/d/0Bw8r1SqN6Yt_YmJMYXY0eVR1ZFE

That worked, thanks. We also just had Dw_Sn on IRC with the same problem, so investigated it a bit further.

I think what's happening is due to #5773, as when you click the link to destroy, the show page is sent as the referrer. https://github.com/theforeman/foreman/blob/1.7.0/app/controllers/concerns/foreman/controller/auto_complete_search.rb#L6 runs on a destroy action (it isn't excluded), so the show page gets stored as the page to redirect back to.

This is probably an issue only with hosts as I don't think other show pages have delete buttons, it's usually on the index. If we simply exclude the destroy action too, then it means if you delete a host from the index that #5773 won't work as the referrer won't be stored.