Currently, if we call reset_view on the widget when no document is loaded, it crashes. It should silently return.
As far as I can tell, this is a regression. For example, it used to work with libreoffice-18.104.22.168-2.fc24, but doesn't with libreoffice-core-22.214.171.124-2.fc24.
Pranav Kant committed a patch related to this issue.
It has been pushed to "master":
tdf#97235: Protect reset_view when called with no tile buffer initialized
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:
Affected users are encouraged to test the fix and report feedback.