Application: kinfocenter (5.8.7)

Qt Version: 5.6.1
Frameworks Version: 5.36.0
Operating System: Linux 4.4.0-87-generic x86_64
Distribution: Ubuntu 16.04.3 LTS

-- Information about the crash:
<In detail, tell us what you were doing  when the application crashed.>

The crash can be reproduced sometimes.

-- Backtrace:
A useful backtrace could not be generated

Report to https://bugs.kde.org/