About the Feature

This feature aims to enable the user, when in list-view, to expand non-empty folders (as shown in the image above).

Additions & Behaviors,

• An entry has been added to the preferences dialog under Display > View Settings to define the default behavior when a new tab/window with list-view is opened.
• When a new tab/window is opened with the list-view as the active view, it will respect the above mentioned setting for the tree-view option and default to that.
• This feature can be toggled on and off using the Enable
  Sponsored
  Tree View entry under the View menu but this only affects the currently active tab/window.

 MR: https://gitlab.xfce.org/xfce/thunar/-/merge_requests/297 

Note: This feature hasn’t yet been merged.

I am working with  Sergios Anestis Kefalidis (@SKefalidis), Yongha Hwang (@MShrimp4) and Alexander Schwinn (@alexxcons) to have this feature out swiftly .