xdg-desktop-portal-gtk crashed with SIGSEGV

[Norbert]

Crashed on first boot of installed Ubuntu MATE 21.04.

ProblemType: Crash
DistroRelease: Ubuntu 21.04
Package: xdg-desktop-portal-gtk 1.8.0-1
ProcVersionSignature: Ubuntu 5.11.0-13.14-generic 5.11.7
Uname: Linux 5.11.0-13-generic x86_64
ApportVersion: 2.20.11-0ubuntu61
Architecture: amd64
CurrentDesktop: MATE
Date: Thu Apr 8 12:40:45 2021
ExecutablePath: /usr/libexec/xdg-desktop-portal-gtk
InstallationDate: Installed on 2021-04-08 (0 days ago)
InstallationMedia: Ubuntu-MATE 21.04 "Hirsute Hippo" - Beta amd64 (20210407.1)
ProcCmdline: /usr/libexec/xdg-desktop-portal-gtk
Signal: 11
SourcePackage: xdg-desktop-portal-gtk
StacktraceTop:
 ?? () from /lib/x86_64-linux-gnu/libgtk-3.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: xdg-desktop-portal-gtk crashed with SIGSEGV
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
XsessionErrors:
 mate-session[1278]: WARNING: Unable to find provider '' of required component 'dock'
 (process:1712): ayatana-indicator-sound-WARNING **: 12:40:44.006: volume-control-pulse.vala:745: Unable to connect to dbus server at 'unix:path=/run/user/1000/pulse/dbus-socket': Could not connect: No such file or directory
 (caja:1630): Gtk-WARNING **: 12:40:44.118: Failed to register client: GDBus.Error:org.gnome.SessionManager.AlreadyRegistered: Unable to register client
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