When I open xsane, and then use VIEW and check the box to enable the preview window, that window comes up, but the display acts as a 1-pixel window in both the vertical and horizontal directions. I.e., all of the preview scan, even the mouse cursor and UI such as "Acquire Preview", appears in a single pixel line on the left and top sides of the window.
The workaround for this behavior is to QUIT xsane while the Preview window is visible (the View checkbox is checked). Presumably that configuration is saved when you quite xsane. When I then start xsane the next time, the preview window comes up at startup with all the rest of the GUI and works as you'd expect.
Certainly not a critical bug and the workaround avoids the problem. May be a bug somewhere in Ubuntu rather than xsane. But I thought someone might want to investigate, or perhaps add the workaround to the 'Problems' menu.
Jack
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