Trying to zoom in/out of the widget when no document is loaded leads to a crash. It would be nice if it could silently return. As far as I can tell, this is a regression. For example, it used to work with libreoffice-5.1.0.1-2.fc24, but doesn't with libreoffice-core-5.1.0.2-2.fc24.
Pranav Kant committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/core/commit/?id=f01bac5cc2b54b6df731b45c46187fec12515b46 tdf#97301: Return silently when no document is loaded It will be available in 5.2.0. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.