Movie export not working in 32-bit Linux

When attempting to export an AIA movie using the default zoom % (e.g. 17%) and width/height (640x640) or similarly small dimensions (800x800, 900x900, etc) the preview display that pops up during encoding is completely black on the current desktop/workspace, but if I switch to a workspace below it I can see what is probably the video that should be encoded at the appropriate scale.

It looks like the preview window is much larger (e.g. 1920 x 4000 pixels) and the desired video is playing in the bottom portion of that preview canvas. (See screenshot for lower desktop view).

In any case, the resulting movies are completely black.

If I attempt to make a larger movie (e.g. >= 1024x1024), I see the tip of the Sun in the preview window from the current desktop, and the resulting movie looks as it should except there is a large black rectangle in the middle of the video.

I tried encoding using different options (frame-rates, download full-quality first, hard/soft/no subtitles) but the result was always the same.