Turns out it is most probabbly: https://github.com/linuxmint/cinnamon-screensaver/issues/194
Fixed by https://koji.fedoraproject.org/koji/taskinfo?taskID=22397913
cinnamon-screensaver-3.4.3-1.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-7e466aa2ed
cinnamon-screensaver-3.4.3-1.el7 has been submitted as an update to Fedora EPEL 7. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2017-3f44186174
cinnamon-screensaver-3.4.3-1.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-553bf0cce4
cinnamon-screensaver-3.4.3-1.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2017-efdf564c2b
cinnamon-screensaver-3.4.3-1.el7 has been pushed to the Fedora EPEL 7 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2017-3f44186174
cinnamon-screensaver-3.4.3-1.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-7e466aa2ed
cinnamon-screensaver-3.4.3-1.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-efdf564c2b
cinnamon-screensaver-3.4.3-1.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-553bf0cce4
nemo-extensions-3.6.0-1.fc26 nemo-3.6.2-1.fc26 cinnamon-3.6.0-1.fc26 cinnamon-control-center-3.6.0-1.fc26 cinnamon-session-3.6.0-1.fc26 cinnamon-screensaver-3.6.0-2.fc26 muffin-3.6.0-1.fc26 cinnamon-settings-daemon-3.6.0-1.fc26 cinnamon-translations-3.6.0-1.fc26 cinnamon-desktop-3.6.0-1.fc26 xapps-1.0.4-1.fc26 cinnamon-menus-3.6.0-1.fc26 cjs-3.6.0-1.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-cef381f3ca
nemo-extensions-3.6.0-1.fc27 nemo-3.6.2-1.fc27 cinnamon-3.6.0-1.fc27 cinnamon-control-center-3.6.0-1.fc27 cinnamon-session-3.6.0-1.fc27 cinnamon-screensaver-3.6.0-2.fc27 muffin-3.6.0-1.fc27 cinnamon-settings-daemon-3.6.0-1.fc27 cinnamon-translations-3.6.0-1.fc27 cinnamon-desktop-3.6.0-1.fc27 xapps-1.0.4-1.fc27 cinnamon-menus-3.6.0-1.fc27 cjs-3.6.0-1.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-9a0c3ec5ec
cinnamon-3.6.0-1.fc26, cinnamon-control-center-3.6.0-1.fc26, cinnamon-desktop-3.6.0-1.fc26, cinnamon-menus-3.6.0-1.fc26, cinnamon-screensaver-3.6.0-2.fc26, cinnamon-session-3.6.0-1.fc26, cinnamon-settings-daemon-3.6.0-1.fc26, cinnamon-translations-3.6.0-1.fc26, cjs-3.6.0-1.fc26, muffin-3.6.0-1.fc26, nemo-3.6.2-1.fc26, nemo-extensions-3.6.0-1.fc26, xapps-1.0.4-1.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-cef381f3ca
cinnamon-3.6.0-1.fc26 cinnamon-control-center-3.6.0-1.fc26 cinnamon-desktop-3.6.0-1.fc26 cinnamon-menus-3.6.0-1.fc26 cinnamon-screensaver-3.6.0-2.fc26 cinnamon-session-3.6.0-1.fc26 cinnamon-settings-daemon-3.6.0-1.fc26 cinnamon-translations-3.6.0-1.fc26 cjs-3.6.0-1.fc26 muffin-3.6.0-1.fc26 nemo-3.6.2-1.fc26 nemo-extensions-3.6.0-1.fc26 xapps-1.0.4-2.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-cef381f3ca
cinnamon-screensaver-3.4.3-1.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.
cinnamon-3.6.0-1.fc26, cinnamon-control-center-3.6.0-1.fc26, cinnamon-desktop-3.6.0-1.fc26, cinnamon-menus-3.6.0-1.fc26, cinnamon-screensaver-3.6.0-2.fc26, cinnamon-session-3.6.0-1.fc26, cinnamon-settings-daemon-3.6.0-1.fc26, cinnamon-translations-3.6.0-1.fc26, cjs-3.6.0-1.fc26, mintlocale-1.4.4-1.fc26, muffin-3.6.0-1.fc26, nemo-3.6.2-2.fc26, nemo-extensions-3.6.0-1.fc26, xapps-1.0.4-2.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-cef381f3ca
cinnamon-screensaver-3.4.3-1.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.
cinnamon-3.6.0-1.fc27, cinnamon-control-center-3.6.0-1.fc27, cinnamon-desktop-3.6.0-1.fc27, cinnamon-menus-3.6.0-1.fc27, cinnamon-screensaver-3.6.0-2.fc27, cinnamon-session-3.6.0-1.fc27, cinnamon-settings-daemon-3.6.0-1.fc27, cinnamon-translations-3.6.0-1.fc27, cjs-3.6.0-1.fc27, mintlocale-1.4.4-1.fc27, muffin-3.6.0-1.fc27, nemo-3.6.2-2.fc27, nemo-extensions-3.6.0-1.fc27, xapps-1.0.4-2.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-9a0c3ec5ec
cinnamon-3.6.0-1.fc26, cinnamon-control-center-3.6.0-1.fc26, cinnamon-desktop-3.6.0-1.fc26, cinnamon-menus-3.6.0-1.fc26, cinnamon-screensaver-3.6.0-2.fc26, cinnamon-session-3.6.0-1.fc26, cinnamon-settings-daemon-3.6.0-1.fc26, cinnamon-translations-3.6.0-1.fc26, cjs-3.6.0-1.fc26, mintlocale-1.4.4-1.fc26, muffin-3.6.0-1.fc26, nemo-3.6.2-2.fc26, nemo-extensions-3.6.0-1.fc26, xapps-1.0.4-2.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.
cinnamon-screensaver-3.4.3-1.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.
cinnamon-3.6.0-1.fc27, cinnamon-control-center-3.6.0-1.fc27, cinnamon-desktop-3.6.0-1.fc27, cinnamon-menus-3.6.0-1.fc27, cinnamon-screensaver-3.6.0-2.fc27, cinnamon-session-3.6.0-1.fc27, cinnamon-settings-daemon-3.6.0-1.fc27, cinnamon-translations-3.6.0-1.fc27, cjs-3.6.0-1.fc27, mintlocale-1.4.4-1.fc27, muffin-3.6.0-1.fc27, nemo-3.6.2-2.fc27, nemo-extensions-3.6.0-1.fc27, xapps-1.0.4-2.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.