World Outliner - Folder will not delete 4.14

Here is how I’m trying to reproduce the issue. Let me know what steps I need to modify to reproduce this more accurately.

  1. Using this button, pressing multiple times very quickly (spamming) to create multiple folders in the World Outliner:

  1. Shown below, created 28 folders/subfolders in rapid succession

  1. Project>Save All
  2. Add various props to random subfolders
  3. Delete random subfolders (different from but may include subfolders from the previous step)
  4. Project>Save All
  5. Select all folders and subfolders as shown:

  1. Delete by pressing delete on keyboard
  2. Result all folders and subfolders delete (Even if they do not delete, proceed with the following steps)
  3. Save All
  4. Close project
  5. Reopen project
  6. RESULT: Deleted folders and subfolders remain deleted.

Please refer to these steps whenever possible in order to reduce variables between our two systems.