It's not just the 'Close Preview' button. Multiple UI elements throughout are affected. Other examples include File > Templates > Manage > "New Folder"
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1427346 Title: [Upstream] Ambiance wrong color for text toolbar buttons in LibreOffice To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1427346/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs