Description of problem: After the latest update of java-1.7.0-openjdk, next time an excel spreadsheet was opened, LibreOffice complained that it couldn't find java and prompted me to go to Tools -> Options -> Advanced and there manually choose which JRE to use. Better would be if it would auto-select one or maybe just use the system default one selected by "alternatives" Version-Release number of selected component (if applicable): libreoffice-4.2.3.3-9.fc20.x86_64
At least with the java-1.8.0-openjdk I'm using on F-20, was able to reproduce a leftover empty /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.0.x86_64 dir tree skeleton when the current version's already /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.5.x86_64, and the leftover dir would have fooled LO. Assume that's also the problem with the java-1.7.0-openjdk update.
libreoffice-4.2.4.2-15.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/libreoffice-4.2.4.2-15.fc20
Package libreoffice-4.2.4.2-15.fc20: * should fix your issue, * was pushed to the Fedora 20 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing libreoffice-4.2.4.2-15.fc20' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2014-6757/libreoffice-4.2.4.2-15.fc20 then log in and leave karma (feedback).
libreoffice-4.2.4.2-15.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.