flatpak安装的steam l4d2 mod不生效 新建steam_game目录,Flatseal设置让steam可以访问 然后把存储空间设置把游戏移动过去 万事大吉~~~ https://www.reddit.com/r/linux_gaming/comments/12522kn/left_4_dead_2_mods_not_working_in_flatpak_version