gtk_widget_grab_default error when opening RDM

Hi all,
I just updated RDM to version 2023.2.0.6 from the debian package provided on your website.
I previously ran RDM 2023.1.1.3, everything worked fine.
When I launch RDM I get a "gtk_widget_grab_default" error :

$ remotedesktopmanager

(RemoteDesktopManager:160316): Gtk-CRITICAL **: 21:18:51.470: gtk_widget_grab_default: assertion 'gtk_widget_get_can_default (widget)' failed
Exception in Gtk# callback delegate
Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.NullReferenceException: Object reference not set to an instance of an object.
at Devolutions.RemoteDesktopManager.Managers.DataSourceManager.FindDataSourceIDByDBID(String dbid) in /home/runner/work/RDM/RDM/Common/Core/Managers/DataSourceManager.cs:line 420
at Devolutions.RemoteDesktopManager.Services.DataSourceService.FindDataSourceIDByDBID(String dbid) in /home/runner/work/RDM/RDM/Linux/RemoteDesktopManager/Core/Services/ServiceStack/DataSourceService.cs:line 127
at Devolutions.RemoteDesktopManager.Managers.AutoOpenManager.Process() in /home/runner/work/RDM/RDM/Common/Core/Managers/AutoOpenManager.cs:line 152
at Client.Windows.MainWindow.AfterWindowShown()
at GLib.Timeout.TimeoutProxy.Handler()
at GLib.ExceptionManager.RaiseUnhandledException(Exception e, Boolean is_terminal)
at GLib.Timeout.TimeoutProxy.Handler()
at GLib.Application.Run(String program_name, String[] args)
at GLib.Application.Run()
at Devolutions.RemoteDesktopManager.Program.Main(String[] args)

I am on Ubuntu 22.04 LTS.
Can you help me have RDM working again ?
Thanks.