Created attachment 125531 [details] HTML file triggering the problem
Description of problem: When displaying large tables, the borders between the cells disappear. Not all borders in the table disappear, only some, and the pattern is apparently random. I attach a sample HTML file which triggers the problem for us. Version-Release number of selected component (if applicable): mozilla-1.7.12-1.4.2 firefox-1.0.7-1.4.3 How reproducible: Most of the time, but not always. I can't see any real pattern. Also, if I just page up and down in the table, the details may vary. Borders that were there at first may disappear when I get back to the same place later, and vice versa. Steps to Reproduce: 1. mozilla .../o.html where o.html is the attached file. Actual results: Some borders in the table missing. Expected results: All borders there. Additional info: The size of o.html appears to be close to some limit. If I remove one or two rows, I see all borders most, if not all, of the time.
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