User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8.0.6) Gecko/20060728 Firefox/1.5.0.6 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8.0.6) Gecko/20060728 Firefox/1.5.0.6 At the top of the page the vertical table borders created with CSS are missing, at the bottom of the page the borders are there. it's the same table. Also on http://www.js-home.org/stellwerksim/index.php he top border of the right most table is missing but to see this kind of table you need to be logged in. Reproducible: Always Steps to Reproduce: See page http://www.js-home.org/stellwerksim/zeitplan.php Actual Results: Parts of the borders in a table are missing, parts are there. Expected Results: All borders should be there.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060831 Minefield/3.0a1 Tried it quite some times in different builds but I could reproduce the problem only once, in a branch build, but never again.

Hint: If I do a simple reload of the page when it is already shown the borders are fine. But when I open another page and go again to this "bad" page (not with back button but with a link) it's broken again. And this happens every time when I open this page and this happens on different machines and with different Firefox versions I've used.

Are the borders 1px wide, or narrower?

I see it also in old Phoenix 0.1.

(In reply to comment #3) > Are the borders 1px wide, or narrower? > Here are the used styles: table.border2 { border-collapse: collapse; border-spacing: 0px; caption-side: top; empty-cells: show; table-layout: auto; } td.border2 { border-bottom: thin solid #000000; } th.border2 { background-color: #8fbc8f; border-bottom: thin solid #000000; } table.border1 { border: thin solid #000000; border-collapse: collapse; border-spacing: 0px; caption-side: top; empty-cells: show; table-layout: auto; } td.border1 { border: thin solid #000000; padding: 1px 3px 1px 3px; } th.border1 { background-color: #8fbc8f; border: thin solid #000000; }

I could reproduce it three times in a current SeaMonkey trunk nightly build with the table at http://www.js-home.org/stellwerksim/zeitplan.php Covering the window did not paint the borders. Zooming/unzooming the text or resizing the window did not paint the borders either. At the top of the page there is an banner ad area followed by a nav bar (the images that say "main" "stellwerksim" etc). I get the impression that the bug depends on the order and/or timing of loading those images, but I could be wrong.

this is a probably a border collapse painting issue.

Any progress?

If there were, you'd see it here. Please don't ask.

Confirmed on FF2.0.0.6 and Seamonkey 1.0.5. I'm guessing this is a dupe of Bug 244135 - which currently says border collapse and rowspan cause it. Both are present here, but I'm not really sure those are the conditions, they may just make it happen more often.

As bug 244135 is marked as fixed but the problem still exist on the mentioned page, I reopen this bug. (using Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14)

Sorry, my fault, got the from bug id. This is fixed.