Administrator privileges are dropped within seconds when using Chrome

If using Google Chrome, after Confluence prompts for administrator access, the administrative access privileges are dropped almost instantly and I get the prompt again (as if it times out). It happens fairly frequently, albeit not consistently. Usually it would be something like 7 seconds.

Once I've got the case where it's about 1 second, so I've tried to switch to Firefox and the problem does not reoccur there.