If a frameset file and frame file are on different sites, the latter doesn't refer the former's frameset definition. http://www.mozilla.gr.jp/~kazhik/testcase/20001220.html (1) Click "Load Right-bottom frame from another site" in Left frame. (2) Click "Load Right-top frame from this site" in Right-bottom frame. New window is generated. Internet Explorer works as intended. NC 4.x works in the same way as Mozilla.
Eric isn't this done for security reasons?
QA Contact update
Japanese user reports this bug seems to correct in 0.9.1. http://bugzilla.mozilla.gr.jp/show_bug.cgi?id=526
This WFM now on recent Linux CVS. Closing WORKSFORME.