Normally, while a web page loads, the tables on the page will re-render, shifiting positions while the page loads. If a drop-down box is open on one of these tables and it shifts position while the drop-down box is open, then the drop-down box will not be drawn correctly; it will shift with the rest of the table, but the unshifted one (which should be erased) is erased only partly or not at all.

Please reopen this bug with a testcase or url and some instructions for reproducing.

Verifying invalid. Need more specific info.

Since I've switched over to a DSL line, I can't get pages to render slow enough to duplicate this exactly. However, one example of something that is close to this is AltaVista's page (www.altavista.net); if you click the drop-down box in the yellow table before the Search button renders, then the drop-down part of the box will not shift over once the button has rendered. However, unlike what I noted before, it will erase properly. (I think that it is necessary that the box be shifted vertically and not just horizontally to affect the erasing.) If there's any way to limit Mozilla's thoroughput to a low level (say, 1-5 K/sec), then I could try to find an example that exactly duplicates the problem I had before. Is there a debug or JavaScript setting to do this?