https://bugs.winehq.org/show_bug.cgi?id=42735
--- Comment #10 from Shmerl shtetldik@gmail.com --- For some reason, when I set in sources:
deb https://dl.winehq.org/wine-builds/debian/ testing main
apt-get update && apt-get dist-upgrade didn't find any updates to recent wine staging package (wine-staging-amd64 2.12.0~buster). But when I changed it to
deb https://dl.winehq.org/wine-builds/debian/ buster main
It worked. I suppose symlink alone isn't enough to make it work?