Hello Mahdi,
Thank you for trusting us by participating with your questions.
I am an Independent Advisor and it will be a pleasure to help you today.
In response to your question, there might some unidentified bug with your app. I recommend opening your app in safe mode and repeat the same process. Let's see if this will help.
If not I advise, you go to settings, under add printer and scanners, click on Microsoft print to PDF, and then click on manage.
Now go to your document you should have 'Microsoft print to PDF' enabled under print option. Click on print and save your document. It should open automatically or look for the saved document.
This should fix the problem, let mW know if you need some help or I assist you further.
I hope you solve your inconvenience as soon as possible. Any other questions here I will be able to help you.
I wish you a fabulous day!
Greetings.