And I believe El Capitan shipped with Safari 9, but now runs Safari 11. Update to SketchUp 2017, which uses Chromium instead of Safari WebKit, or if you must stay with 2016, update OS & Safari to most recent.
And I believe El Capitan shipped with Safari 9, but now runs Safari 11. Update to SketchUp 2017, which uses Chromium instead of Safari WebKit, or if you must stay with 2016, update OS & Safari to most recent.