Several rendering problems with a PDF

[halabund]

The problem file:
http://latex-beamer.sourceforge.net/beamerexample1.pdf

The problems (with build 25)

Page 2: White line at the left of "Outline" (compare with Adobe Reader). With of line is independent of zoom factor.

Page 6: Background of "turing machine" image should be transparent, not white (also true for small logos in bottom-right corner, and for list bullets).

Page 23: The red gradient in the "Intuition" box shows a horizontal black line at several (but not all) zoom factors. The problem is visible with some other gradients as well. Some kind of rounding issue, perhaps?

EDIT: Note that these problems are different from https://www.pdf-xchange.com/forum/v ... php?t=3123 . There the gaps really exist in the gradient (i.e. they are not independent of zoom).

[Bhikkhu Pesala]

Confirmed, but apart from the image background transparency, the other issues seem trivial.

[Ivan - Tracker Software]

Some problems are fixed (transparency of the images; background under bullets on page 6) and some still in work (white line and black horizontal line on page 23) while they are related to stroke adjusting problem.