Recently I noticed that when using Chrrome with some tabs open (Facebook on one of them), sometimes when I come back to the computer, I see a new tab with Facebook page on it, but it emmidiately dissapears. It almost never opens when I work in front of the computer - only when I'm returning in front of the computer. It's very strange and very annoting not to know what causes this tab to open. It's never something else - always Facebook. When I click "Reopen close tab" afterwards, it always opens Facebook. I have only 3 extensions installed: Quick and Clean, You Tube donwloder and Quick Note. Does someone know what the problem could be?
You didn't mention which operating system, but try these -
PS: When you say "come back to the computer" - are you using a screen saver? Maybe change the settings to a very short timeout and see if that still causes the issue (maybe Facebook chat presence is trying to update from Available to Idle/Away, etc?).