Issue: Attachment Uploader misses a 'browse' button.

The button says "Select File". This is barely different verbiage from the "Choose File" button in VaultWiki 3. In XenForo, "Choose File" is also used by the XenForo uploader.

So I suppose your report is that the "Select File" phrase is inconsistent with the forum phrase "Choose File"?

You are right. This is a non issue. The confusion is caused by the 'Upload File' text. This makes it seem as if something needs to be done at that location.
I suggest moving the 'select file' button to the left and left aligning both buttons. The same as the buttons for create now and cancel are.

Fixed in the next release. The phrase that says "Select File" has been changed for consistency to say "Choose File." This button has been moved closer to the "Upload File" label (left) on all platforms. Additionally, the "Clear" button has been removed in most cases. It only needs to appear when editing an existing attachment, if the user decides not to upload a new version after already choosing one. Thus the button now only appears on the Edit tab (not during creation) after "Choose File" is used.