GUI crash on requesting a dialog from gtk on Ubuntu

[balazsdukai]

Whenever a request a dialog from gtk, eg. open a file the GUI crashes with the error log that I attached.

geoflow_gui_click_button_crash.txt

I'm on a vanilla Ubuntu 20.04

Packages:

GNOME Shell 3.36.4

libglfw3-dev/focal,now 3.3.2-1 amd64 [installed]
libglfw3/focal,now 3.3.2-1 amd64 [installed]

libxrandr-dev/focal,now 2:1.5.2-0ubuntu1 amd64 [installed]
libxrandr2/focal,now 2:1.5.2-0ubuntu1 amd64 [installed,automatic]

libgtk2.0-0/focal,now 2.24.32-4ubuntu4 amd64 [installed,automatic]
libgtk2.0-bin/focal,now 2.24.32-4ubuntu4 amd64 [installed,automatic]
libgtk2.0-common/focal,focal,now 2.24.32-4ubuntu4 all [installed,automatic]
libgtk2.0-dev/focal,now 2.24.32-4ubuntu4 amd64 [installed]

gir1.2-pango-1.0/focal,now 1.44.7-2ubuntu4 amd64 [installed,automatic]
libcogl-pango20/focal,now 1.22.6-1 amd64 [installed,automatic]
libpango-1.0-0/focal,now 1.44.7-2ubuntu4 amd64 [installed,automatic]
libpango1.0-dev/focal,now 1.44.7-2ubuntu4 amd64 [installed,automatic]
libpangocairo-1.0-0/focal,now 1.44.7-2ubuntu4 amd64 [installed,automatic]
libpangoft2-1.0-0/focal,now 1.44.7-2ubuntu4 amd64 [installed,automatic]
libpangomm-1.4-1v5/focal,now 2.42.0-2build1 amd64 [installed,automatic]
libpangoxft-1.0-0/focal,now 1.44.7-2ubuntu4 amd64 [installed,automatic]
pango1.0-tools/focal,now 1.44.7-2ubuntu4 amd64 [installed,automatic]