On Debian sid/unstable with *libreoffice* 4:25.2.2-1, *gnome-shell* 48.0-1 with Wayland and 200 % scaling, starting LibreOffice the previews of the latest opened documents are blurry.
*** This bug has been marked as a duplicate of bug 166027 ***
*** This bug has been marked as a duplicate of bug 152685 ***