Content is shown only inside the thumbnails

Hi, everybody

  • I can’t show screens of my monitor because I’ve signed an NDA
  • When I close the project, after being COMPLETELY sure that I’ve saved it. And I reopen it the “viewport” and the layers are blank but the contest is shown inside the thumbnails. If I save the whole content is cancelled even in the thumbnails.
    It happened one time already on a smaller object inside 4-5 panels. I updated everything from Windows general drivers to graphic cards driver. I even seen if I needed to update the BIOS, fortunately not.
    This glitch happened again with 6 characters in 20 different panels. This is not something that I can redraw easily…
    There is a way to resolve this without redrawing everything?