By the way, in my case it happened only with some kind of files. For example, text files showed the "empty" window (and the lack of indexing of .tex files), while it worked well for example for PDF files.
By the way, in my case it happened only with some kind of files. For example, text files showed the "empty" window (and the lack of indexing of .tex files), while it worked well for example for PDF files.