Thank you for reporting this bug to Ubuntu.
Ubuntu 18.10 (cosmic) reached end-of-life on July 18, 2019.
See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases
We appreciate that this bug may be old and you might not be interested
in discussing it any more.
The error report for this bug:
https://errors.ubuntu.com/problem/9afb0dcc7f78b5b850ee48662ccf8311043a89ec
only mentions 18.10, so please open a new bug for 19.04.
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Desktop Bugs, which is subscribed to gnome-shell in
Also affects Gnome on Ubuntu 19.04, at least under Wayland. Line number
is a bit different (269 instead of 253), but the rest is the same.
Crashes the session.
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gnome-shell (Ubuntu)
Status: New => Confirmed
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** Summary changed:
- /usr/bin/gnome-shell:gnome-shell: ../../src/hb-object-private.hh:253: Type*
hb_object_reference(Type*) [with Type = hb_face_t]:
\343\202\242\343\202\265\343\203\274\343\202\267\343\203\247\343\203\263
`hb_object_is_valid (obj)'
