Sticky notes crash when open new note

[Stephematician]

Testing Ubuntu 25.04; add Sticky Notes to mate-panel, then select 'New note'.

After a while, the application crashes and prompts the user to 'keep' or 'delete' from the panel; recommend to delete as otherwise the panel may crash on open.

Following output is seen in journal:

03:51:27 ubuntu-mate kernel: Code: 55 49 89 cd 41 54 45 89 cc 53 44 89 c3 48 83 ec 28 48 8b 45 10 48 89 55 b8 48 89 45 b0 64 48 8b 04 25 28 00 00 00 ...
Apr 11 03:51:27 ubuntu-mate kernel: stickynotes-app[8549]: segfault at 968 ip 0000774b5b6cc8ed sp 00007ffc5e21b620 error 4 in libX11.so.6.4.0[208ed,774b5b6 ...
Apr 11 03:51:27 ubuntu-mate stickynotes-app[8549]: gtk_widget_get_window: assertion 'GTK_IS_WIDGET (widget)' failed

Probably this upstream bug: https://github.com/mate-desktop/mate-applets/issues/664

Description: Ubuntu Plucky Puffin (development branch)
Release: 25.04

mate-applets:
  Installed: 1.26.1-3.1
  Candidate: 1.26.1-3.1
  Version table:
 *** 1.26.1-3.1 500
        500 http://archive.ubuntu.com/ubuntu plucky/universe amd64 Packages
        100 /var/lib/dpkg/status

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/2106789

[Launchpad Janitor (janitor)]

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