Hi.

I am experiencing a bug where when I try to draw a line and make it either horizantally or vertically aligned using [Shift] button, it makes the operation unable to end. And when I try to navigate, the line just stretches along with the mouse. I can still navigate to other windows, but when I return to the PDF window I am originally working on, it still is in the same condition and the line operation is still running.

For now, the work around is that I need to "fake close" (close the file by middle mouse click and select "No" when prompted to save). But it is really inconvenient.