NoBrandHero

It's terribly ironic for you to say that while advertising your company's Facebook page in your signature block. Anyway, re-installing and restarting is about the extent of my ability to care at 9pm on a Friday night. It's more of a "that's weird" problem than a "this must be fixed ASAP!" problem ;)

Problem persists with every extension except Browser Guard disabled.

Done. The issue remains. I uninstalled Browser Guard. Checked for Chrome updates, it was up to date. I restarted. When I launched Chrome the Facebook Contacts loaded normally and were functional. I re-installed Browser Guard and refreshed Facebook, and the Contacts sidebar immediately disappeared.

I am experiencing the same issue in Chrome with Browser Guard 2.2.18. The Contact List appears and then immediately disappears. If I disable Browser Guard the Contact List loads and does not disappear. Running Browser Guard with all blocks turned off for Facebook STILL results in the Contact List disappearing immediately after loading. Only disabling the extension completely restores functionality.