This bug was fixed in the package gtk+3.0 - 3.22.30-1ubuntu1
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gtk+3.0 (3.22.30-1ubuntu1) bionic; urgency=low
* Merge from Debian unstable. Remaining changes:
+ Install a settings.ini file to set our themes
+ Update debian/libgtk-3-0.symbols
+ debian/control.in:
the new version has been approved
** Changed in: gtk+3.0 (Ubuntu)
Status: Triaged => Fix Committed
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https://bugs.launchpad.net/bugs/1764548
Title:
Update gtk+3.0 to 3.22.30 for
** Description changed:
New upstream bugfix release in the stable 3.22.x series.
gtk3 is part of the GNOME microrelease exception and we did an SRU with
it for Ubuntu 17.10.
https://gitlab.gnome.org/GNOME/gtk/blob/gtk-3-22/NEWS
https://gitlab.gnome.org/GNOME/gtk/commits/gtk-3-22