NativeFileDialog - setting root subfolder to anything other than '/', '.', and '\' from editor returns an error

[Pandji25]

Every time I type something on the root_subfolder property in the editor, it returns this error:

E 0:00:01:0799   godot::NativeFileDialog::set_root_subfolder: root_subfolder must be an existing sub-directory.
  <C++ Error>    Condition "!DirAccess::dir_exists_absolute(get_root_string() + p_root)" is true.
  <C++ Source>   src\native_file_dialog.cpp:218 @ godot::NativeFileDialog::set_root_subfolder()

I can only type '/', '.', and ''.

However, setting the root_subfolder in the _ready() function works just fine.

I am using Godot 4.1.2