https://mail.gnome.org/archives/evolution-list/2018-April/msg00086.html implies that this problem has been fixed in a newer Evolution package on Ubuntu.
Lukas: Can you confirm? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to evolution in Ubuntu. https://bugs.launchpad.net/bugs/1763691 Title: Copy/paste to message body does not work on Bionic Status in evolution package in Ubuntu: Incomplete Bug description: Wether using ctrl-v nor context menu or middle mouse button works to paste text (plain text) into message body on Ubuntu Bionic. (On Debian Stretch it is working fine) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/evolution/+bug/1763691/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp