This appears to be a bug in Tk. We received a description of the problem and a fix for Tk from Conrad Huang. Here's a patch . Crash reading Netscape version 1 history files. Here's a patch .
Unvisited anchors are purple instead of blue.
The active link isn't re-colored on the button press event. Printing images that require a page break to be inserted messes up the page length. No in-line scaled images. Sometimes images don't get loaded with no indication as to the reason. See also a note on the current tables implementation .