I am testing, playing with systray now and I am not able to simulate it.
Do you restore PSpad clicking on systray or clicking on PSPad icon or?
Do you open any other file before restore?
Are files local or on some share? If from share, ensure that Store from local
drives option isn't checked in the Program settings / Files and dirs 

Is there any stape by step to simulate it?

PSPad freeware editor https://www.pspad.com

Odpovedet emailem