Just purchased. Made a short MD and saved same. The file was selected in the All Files pane. Went to File menu /Export/PDF. The save dialog opens and then freezes - can't do anything except close the app . I have version 0.39 of the app. I am working on Windows 11 Home Version 22H2. Aspire Laptop i5-1035G1 CPU and 12GB memory. A bit disappointed - unless I have done something wrong?