Blank bar through images on pages with Java applets

(Originally Mozilla bug# 108866 now merged into Mozilla bug  # 93170)

    This page illustrates a display problem in Netscape 6.2 for Macintosh OS 10.1. A blank bar appears in the image, covering part of the "m" in "Rheumatology".  This happens about a third of the time.  This behavior seems to be more frequent when the mouse is being moved, or the mouse is over the browser pane (as opposed to the mouse being over the browser's "Reload" button).

    This bar through images seems to depend on a Java applet being on the same page as the image.  This does not appear to be a problem with a specific Java applet since the problem has been seen with three different Java applets (but the Java source code for this particular applet is available).  The problem does not appear to be a problem with this particular image since it has been seen also with a different image, which also gets a blank bar down its center.  If the image is in a different position on the page the blank bar is still down the center of the image.

    It is not clear whether there is something special about Java applets that results in this problem or whether the problem arises from the delay required to load a Java applet.  

    The problem does not occur with Netscape for Macintosh OS 9 or Internet Explorer 5.1.2 for OS 10.1. 

    Rarely, a second problem has been seen with this page, consisting of a second copy of one of the applet buttons appearing in another location such as covering the address bar of the browser.  This is reminiscent of the TextField Display Bug.

    Addendum:  this bug has been merged into a more general Netscape plugin bug - Mozilla bug  # 93170.  The problem is seen in "millions of colors" but not in "thousands of colors". 

 

    If you have any insights, workarounds or comments about this test page please contact Mickey Segal.  A full list of Macintosh Java bugs we have reported and provided demonstration applets for on the Web is at this link, including information on how to add any necessary Java plugins.