When using net-p2p/qbittorrent-4.6.0 built with Qt5, the tray icon is missing, and on the spot it should be, there is just blank space. This is not the case with 4.5.5 Upstream issue: https://github.com/qbittorrent/qBittorrent/issues/19758 Upstream PR: https://github.com/qbittorrent/qBittorrent/pull/19814 I have tested the PR locally and can confirm it makes the icon appear fine.
Fixed with https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=0abb5770f29ec29021747dbd2c161d8d50154d39