I confirm it's the option "freedesktop.org tray icon base on dbus" in "addon --->advanced" that cause the problem . running fcitx-config- gtk3 to unchecked it can fix the problem.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1731524 Title: mate panel freezes when clicking on fcitx icon in the notification area while having a text field selected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-mate/+bug/1731524/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs