Initially insert thumbnails rather than TOC, otherwise the thumbnails may never show up due to some mysterious AppKit bug.
Initially insert thumbnails rather than TOC, otherwise the thumbnails may never show up due to some mysterious AppKit bug.

JackieXie168/skim,JackieXie168/skim,JackieXie168/skim,JackieXie168/skim,JackieXie168/skim