There are some PDFs that I can’t close easily (scanned files, I’m not sure). When I press Ctrl+W or click ‘×’ a dialog warns there are unsaved annotations, even when I didn’t do nothing. I opened the file and tried to close it the next second. I guess this is a bug.
I only use SumatraPDF to read PDFs, I don’t want to do any editing. Is it possible to disable annotations entirely?