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Description of problem:

Critical message when opening a pdf in presentation mode in evince:
(evince:61428): GLib-CRITICAL **: 10:51:03.741: g_variant_new_string: assertion 'string != NULL' failed

Version-Release number of selected component (if applicable):


How reproducible:
always

Steps to Reproduce:
1.$ evince test_files/gnome-documents-getting-started.pdf 
(allocation 18, extents 12x12) while allocating gadget (node label, owner GtkLabel)
2. Open a menu located in the top panel
3. Click Fullscreen checkbox

Actual results:

(evince:61761): GLib-CRITICAL **: 10:55:31.592: g_variant_new_string: assertion 'string != NULL' failed

(evince:61761): Gtk-WARNING **: 10:55:32.493: Negative content width -6 

Expected results:
no critical errors

Additional info:

Version:

gedit-3.28.1-3.el8.x86_64

Btw I cannot reproduce this in Fedora or with upstream flatpak version:
Evince      org.gnome.Evince              3.36.1     stable    user

Created attachment 1694078 [details]
backtrace

According to the backtrace the warning shows when presentation mode is turned on not fullscreen mode which corresponds with what I'm able to reproduce.
This has been fixed upstream in this merge request:

https://gitlab.gnome.org/GNOME/evince/-/merge_requests/13

The patch is applicable to RHEL 8 and fixes the issue there so I'm giving this bug devel_ack+.

I am not able to reproduce with evince-3.28.4-7.el8.x86_64.

Thanks Marek !

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (evince bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:4651