apport-kde from xenial crashes due to charset encodings

[Joan]

When using apport-collect in an environment with kde, it consistently crashes

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$ apport-collect 1589997
dpkg-query: no packages found matching linux
Traceback (most recent call last):
  File "/usr/share/apport/apport-kde", line 530, in <module>
    sys.exit(UserInterface.run_argv())
  File "/usr/lib/python2.7/dist-packages/apport/ui.py", line 653, in run_argv
    return self.run_update_report()
  File "/usr/lib/python2.7/dist-packages/apport/ui.py", line 569, in run_update_report
    response = self.ui_present_report_details(allowed_to_report)
  File "/usr/share/apport/apport-kde", line 367, in ui_present_report_details
    desktop_info)
  File "/usr/share/apport/apport-kde", line 184, in __init__
    self.ui.ui_update_view(self)
  File "/usr/share/apport/apport-kde", line 358, in ui_update_view
    QTreeWidgetItem(keyitem, [str(line)])
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in position 21: ordinal not in range(128)

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There is a patch in a comment in this bug (https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1368911) by @schmod, but the bug is for apport, hence I am opening this as a new one.
I tested the patch on my system and now it works as expected.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Joan (aseques)]

In focal there are no longer problems with this, issues can be reported via drkonqui and everything works normally.