ibus 1.5.3 or later supports the system cache besides the user cache and the system cache can reduce the launching time of ibus-daemon when the users log into the desktop session initially. I'd ask the engines to have 'ibus write-cache --system' in their %post and %postun if the engines are installed by default comps. Please refer the %post and %postun in ibus-anthy: http://pkgs.fedoraproject.org/cgit/ibus-anthy.git/tree/ibus-anthy.spec#n105
ibus-chewing-1.4.5-1.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/ibus-chewing-1.4.5-1.fc20
ibus-chewing-1.4.6-1.fc19 has been submitted as an update for Fedora 19. https://admin.fedoraproject.org/updates/ibus-chewing-1.4.6-1.fc19
ibus-chewing-1.4.6-1.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/ibus-chewing-1.4.6-1.fc20
ibus-chewing-1.4.10.1-1.fc19 has been submitted as an update for Fedora 19. https://admin.fedoraproject.org/updates/ibus-chewing-1.4.10.1-1.fc19
ibus-chewing-1.4.10.1-1.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/ibus-chewing-1.4.10.1-1.fc20
ibus-chewing-1.4.10.1-1.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.
ibus-chewing-1.4.10.1-1.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report.