This is a hotfix release too. It addresses some important RSS issues. macOS builds will follow.
NOTICE: If you find your torrents being paused instead of seeding, then right click on your torrent, choose Limit shario ratio... and adjust the setting.
v4.0.2 changelog:
BUGFIX: Fix crash on some systems when creating address object for 255.255.255.255. Closes #7735. (sledgehammer999)
PERFORMANCE: Change MixedModeAlgorithm default to TCP. This was the v3_3_x default and should sustain higher speeds. Closes #7779. (Chocobo1)
PERFORMANCE: Stop logging IP filter parsing errors after a while, otherwise the GUI freezes or qBittorrent doesn't start. (sledgehammer999)
GUI: Implement stable sort. Rows in transfer list shouldn't flicker anymore. (Chocobo1)
WEBUI: Fix build when webui is disabled. (Heiko Becker)
RSS: Fix build because of missing header. Closes #7805. (thoradia)
RSS: Fix RSS parser. (glassez)
RSS: Implement Import/Export RSS rules in legacy(aka v3_3_x) format. (glassez)
RSS: Implement Import/Export RSS rules in JSON format. (glassez)
WINDOWS: Fixed blurry text under Windows by setting DPI awareness to default. (TheNicker)
LINUX: Fix i386 build. (Evgeny Lensky)