Just notice :) Hello again. In Fedora 33 bug fixed i get patch from fedora source package and add it in debian mutter source, next i rebuild mutter and install new custom deb packages and restart restart gnome session.
It fixed this problem i test cs:go game and sdl2 applications all works fine =) i wrote script for get/patch/build and install ```sh #! /bin/bash sudo apt build-dep mutter && sudo apt install rpm2cpio && mkdir new-mutter && cd new-mutter && mkdir rpm-mutter && cd rpm-mutter && wget -P ./ " https://kojipkgs.fedoraproject.org//packages/mutter/3.38.1/3.fc33/src/mutter-3.38.1-3.fc33.src.rpm"; && sync && rpm2cpio mutter-3.38.1-3.fc33.src.rpm | cpio -i --make-directories && cd ../ && apt source mutter && cp ./rpm-mutter/0001-window-props-Also-check-for-actual-values-change.patch ./mutter-3.38.1/debian/patches/ && echo "0001-window-props-Also-check-for-actual-values-change.patch" >> ./mutter-3.38.1/debian/patches/series && cd mutter-3.38.1 && debuild -b -uc -us && while true; do read -p "Do you wish to install new deb package witch fix fullscreen? [yes/no]" yn case $yn in [Yy]* ) cd ../ && sudo dpkg -i ./*.deb && echo "NOW NEED RESTART YOU GNOME SESSION" break;; [Nn]* ) exit;; * ) echo "Please answer yes or no.";; esac done ``` I do not call for this solution, but it can help those who are very important that they have full-screen applications working right now and they cannot wait. p.s. Sorry for my english, I am using an online translator for this text. =) dron ^.^
