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GtkTreeModelFilter doesn't always notify parent model about new rows

Steps to reproduce

  1. Compile and run the attached minimal example
  2. Click on "Insert and expand"
  3. Collapse the "A" tree row
  4. Click on "Insert and expand" twice - first problem: no new rows are visible
  5. Collapse the "A" tree row again - second problem: critical error printed out in the terminal Gtk-CRITICAL **: 10:48:56.496: gtk_tree_view_unref_tree_helper: assertion 'node != NULL' failed
  6. Expand the "A" tree row again - third problem: Only A4 row is visible

Current behavior

Described in steps 4-6 above

Expected outcome

After clicking on "Insert and expand" the last two times, "A3" and "A4" rows should be visible in the tree

Version information

GTK 3.24.43 on Arch Linux with latest updates