[trunk] Navigator gets into redraw loop
Create a multi-page score, say 10 pages. Drag the nav window until the point that the scroll-bar is about to appear. The nav window will get into a redraw loop, using high CPU. Only when you drag the nav window larger will the scroll bar appear and the CPU usage go back to normal. The attached pics shows what happens in the navigator and the page settings/preview when this condition is reached.
The page settings pic doesn't show the exact same symptoms (clpbd106). In it, there are back lines that are drawn across the top and down the left side. Neither of them reach to the edge of the window, the left line stopping where the scroll bar should be, the top one ending a few mm from the right edge.