Here's an important bug that is biting me over in the tree widget, Chris. If you set the visibility of a column or row to collapse, it works just fine. if you later set the visibility back to normal, the contents of the cells no longer display. Here is a simple HTML test case that shows the problem. <table cellspacing=0 border=1 style="background-color:orange;"> <caption><b>after</b></caption> <colgroup> <col> <col id="foo"> <col> <col> </colgroup> <tr><td>C11<td>C12<td>C13<td>C14 <tr style="visibility:collapse;"><td>C21<td rowspan=2 colspan=2>C12 C13 C22 C23<td>C14 <tr><td>C31<td>C34 <tr><td>C41<td>C42<td>C43<td>C44 </table> <button onclick="var v = document.getElementById('foo'); var s = v.getAttribute('style'); if (s != '') v.removeAttribute('style'); else v.setAttribute('style', 'visibility: collapse')"> Click me to toggle the second column!</button> In the above test case, the first time you click the button, the column will collapse. The second time you click it, the column will re-appear, but the cells will all be empty. This also happens with row collapsing. This is a blocker tree widget bug, since i need to be able to do dynamic row/column effects.

*** Bug 21765 has been marked as a duplicate of this bug. ***

chrisd - when this is marked fixed, can you let me know? I'd like to verify the specific case in the duplicate bug for mail. Thanks.

I have already tried it in mail which is why I marked it a duplicate.

Fixed with latest table checkin.

Using 7/13 build, columns collapse and reappear appropriately. Verifying bug fixed.