@michganpa - if you can't see any edges to drag, type Alt+Space, M and move the Window with arrow keys until you can see an edge - then use title bar moves and edge dragging to resize.
Which version of calibre.
When I installed a fresh Windows Portable 3.0, the main window was OK, but some of the dialogue boxes (e.g. metadata edit and conversion) overfilled the 1920x1200 screen, I assumed it was conflict between my Window Manager and the Qt package. This was on a system that has only ever had only one monitor.
BR
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