hey im experiencing one bug with the page, when you want to go to a second or third page of anything like, characters, stage, misc and any others, when you select a diferent page automatically returns you to the first one.
and i turned off the safe search and the Facebook and the bug still happening.
If you meant that you turned Safe Search off and Facebook on, then you must be trying to navigate the Vault incorrectly, either that, or you don't wait for the Vault to load up the page you had intended to navigate to.
I've seen that little quirk whenever I go to the next page in a category like, say, the character Link category, and there have been times when for some odd reason, clicking to go the the next page shows no results. After that happens, I usually click refresh, then wait for the first page of the category to load, then to the page I was trying to access before clicking refresh. The waiting process is kinda long, even for my beast of a computer, so I don't think it's completely your fault.
I have been able to use the Vault with both Safe Search and Facebook off, however, since Facebook really only adds to the already long loading process and isn't completely necessary, unless you prefer to keep an eye on the feeds on the Brawl Vault main page.