[4.1 Beta 1] Create new page: [file] overlay file browser slow to load, in XF: does not trigger progress bar indicator
The VaultWiki XF and vB4 demos are a little slow with loading the "File browser" overlay. It takes around 3 to 4 seconds for the overlay to appear.
File browser also does not trigger XenForo's progress bar indicator. This leaves an initial impression that the site did not register the click event.
If it isn't possible or practical to speed this up, then I suggest that the "File browser" overlay should begin with placeholder text that can be replaced with the real contents once available. XenForo uses this approach with user profile tab panes "Recent activity", "Postings", "About". These panes have placeholder "Loading..." text.