Quote:
Originally Posted by AnotherCat
It is a typical graphics adapter "thing" to get a flashing white dot adjacent to the cursor.
Set display scale to 100% and try changing everything you can, one at a time, in display settings (resolution, etc) and adapter settings (if any).
Maybe driver, but I doubt it.
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Driver unlikely, since the only thing that's changed is calibre 3 -> calibre 4 (and thus new Qt library).