New
#11
I noticed that the behavior where folders opened twice appeared after I turned on the Launch folders windows in a separate process option in Folder Options.
Instead, it occurred when I navigated to the desktop in file explorer and double-clicked a folder on the desktop.
I turned it off and it stopped happening (you have to close any open file explorer windows for the change to take effect).
The problem comes back when it is turned on.
Restoring to defaults should fix it for you, because that disables the option. It's strange that it comes back.