'Pin to top'-files bad sort with expanded folder

[BuckyB]

I've found something funny with Label Defintions/Assignments, where sometimes files are erroneously sorted before folders when folders are expanded.

Instead of me trying to explain, here's how to reproduce:

• Sort on filename, low to high.
• In Folder Format/Sorting, select Mixing: "Folder listed before files".
  
• Create a file filter that moves some files to top:
• • In Prefs/Label Definitions, create a label that has 'pin to top' checked.
    
• • In Prefs/Label Assignments, create a Wildcard Label with "_*" as filename, and have it use the label we just created.
    
• Create new 'root' folder.
• In root folder, create 2 'pin to top'-files and 1 normal file.
• In root folder, create 3 folders with alphabetically sorting names: "A", "B", and "C".
• In folder B (middle folder), create 3 'pin to top'-files and 1 normal file.
• Folders A and C can stay empty.
• Go to root folder and refresh the lister.
• Expand folder B using key shortcut or arrow in lister

Expected outcome: Root folder's files show in lister on bottom, below folders A, B, and C, like so:

Actual outcome: Root folder's 2 'pin to top'-files move to top of lister.

[Leo]

Under Folder > Folder Format (or Folder Options if using toolbars from an older version), what's the Mixing setting set to when in the shown folder?

[BuckyB]