It looks like thunar is loading directories twice in some cases

When directory specific settings are enabled, and a new folder is opened, that new folder is loaded twice in some occasions.

If I am not mistaken, it always happens when the folder which is opened uses a different view-type than the original folder.

Version information

thunar 4.21.5

Add some printf into thunar_tree_view_model_load_dir e.g. before the signal connects: printf("thunar_tree_view_model_load_dir: %s\n", thunar_file_get_basename(node->file));, build thunar.
mkdir -p /tmp/test/sub
Open thunar and navigate into /tmp/test
Enable directory specific settings
Use "icon view"
Navigate into /tmp/test/sub
Use "list view"

Whenever switching between both directories, the printf is printed twice.

Directory should only be loaded once, to minimize filesystem IO