Issue link: 2479
This page takes forever to load if you set ?ip=[unreachable IP address]. Anything that's got port 80 filtered (not closed) will work fine.
Watch the net panel -- it should have stats like:
| 0ms | DNS Lookup |
| 0ms | Connecting |
| 0ms | Queuing |
| 60ms | Waiting For Response |
| 15ms | Receiving Data |
| 15ms | Receiving Data |
| +21.09s | 'DOMContentLoaded' (event) |
| +21.1s | 'load' (event) |
The net panel only has one GET request (to fbug-timeout.php), and gives no insight as to why the page load took so long.