A document was created with LibreOffice 3.3.3, and it contains a simple table with borders. When opening that file with LibreOffice 3.4.1 (Final) the table borders formatting changes. I made a blog entry to describe the problem here: http://temporaryland.wordpress.com/2011/07/14/libreoffice-3-4-1-problem/ There you will be able to find the original 3.3.3 document as well as the 3.4.1 one.
I installed 3.4.1 back on to do a further test. I created a table from scratch in 3.4.1. I then tried to change the border thicknesses. It just doesn't do it. The border remains at the original .25 thickness. This has been confirmed by a second user of LibreOffice 3.4.1 in Linux.
Reproduced on LibreOffice 3.4 340m1(Build:103) for OpenSuse Linux. I see the same differences as the one you posted on your blog.
Correction on my last comment. Creating a table from scratch on 3.4.1 does allow one to change the thickness. The problem is that when you close the table properties dialog and then go back to it, if you click on any of the borders in the preview, it doesn't tell you what the thickness of the line is. It just shows you the default thickness. The preview in the Table Properties dialog box shows no different in thickness until one reaches 2.0. So, it seems to be impossible to tell what the assigned thickness is for any of the borders. I see that the op bug has been marked as fixed. I'll submit the above as a new bug. Although it may be more of a feature request.
@reporter: What's the difference between this one and "Bug 39336 - Table Properties Dialog doesn't show existing border thicknesses"?
@ Rainer, The difference is explained on that bug's comments. They are very different issues.
That's a 3.3.3 bug that has been fixed for 3.4. I know that old OOo bug although I can't find the Issue. I opened "test1.odt" with LibO3.4.1 and found double border (correct) I opened "test1.odt" with OOo 3.1.1 and found double border shown in Table Properties dialog (correct?), but rendered only simple thick line (incorrect) I created an own test document showing 1 cell table with double line border with OOo 3.1.1 and found double border shown in Table Properties dialog (correct), but rendered only simple thick line (incorrect). So this one is INVALID @rm42: Thank you for your attention!
Created attachment 49285 [details] Screenshots, see Comment 6
Can someone please look at bug 38542. It's a related issue, and has been open since June 21 without any comments. That bug contains an example of a file containing tables created in OpenOffice. When opened in LibreOffice 3.4.x, the table rules are huge, obscuring the contents of the table cells. The example is representative of hundreds of tables in my documents that are wrecked by the change to table border functionality. It will be a huge hit to convert all my tables to the new format (there aren't Styles for tables, as in Framemaker, are there?) individually, by hand. If the upgrade to 3.4 doesn't convert the tables to look the same in the new dialog, there should be some sort of guidance for the user to understand how the new options relate to the old ones. (The different double-lines look identical in the dialog until you apply them into a table!)