[GTK 4 bug] hl_list_n.f90, hl_list_renderers.f90, hl_tree.f90: a warning when double-clicking in a field for editing

[vmagnin]

Describe the bug
In hl_list_n.f90, hl_list_renderers.f90, hl_tree.f90, a warning appears when double-clicking in a field for editing:

(hl_list_n:3911): Gtk-CRITICAL **: 09:40:24.451: gtk_css_node_insert_after: assertion 'previous_sibling == NULL || previous_sibling->parent == parent' failed

But edition is working.

Your system:

• OS version: Fedora Rawhide (34) ; MSYS2/Windows 10
• Compiler version: gfortran 11.0.0 ; 10.2.0
• GTK branch: gtk4-vmagnin (GTK 4.0.0 ; 3.99.4)

[vmagnin]

https://gitlab.gnome.org/GNOME/gtk/-/issues/3180

[vmagnin]

I have submitted a bug on:
https://gitlab.gnome.org/GNOME/gtk/-/issues/3585

[vmagnin]

Still present in GTK 4.4.0 (Fedora Rawhide).

[vmagnin]

Still present in GTK 4.7.2 (Fedora Rawhide).

[vmagnin]

With GTK 4.12.1 (Fedora 40 Rawhide), the warning occurs only once at start, but not anymore when double-clicking in a field.

[vmagnin]

https://gitlab.gnome.org/GNOME/gtk/-/issues/4884