You may use Fullscreen/Maximized window after proposed steps.
The problem was: if FastRawViewer exited (Menu - File - Quit program) from Maximized or Full-screen state, it records incorrect 'standard' geometry. It is fixed in FRV 2.0.6, but you need to save right/correct geometry for one time.
You may use Fullscreen
You may use Fullscreen/Maximized window after proposed steps.
The problem was: if FastRawViewer exited (Menu - File - Quit program) from Maximized or Full-screen state, it records incorrect 'standard' geometry. It is fixed in FRV 2.0.6, but you need to save right/correct geometry for one time.
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Alex Tutubalin/FastRawViewer team