Version: 1.5 (using KDE KDE 3.5.0) Installed from: Slackware Packages Similar to bug 85343. It seems to be impossible to save the positional data of the message labels in collaboration diagrams (those representing the operation being selected). They are automatically reset after the label has been moved and another item or the diagram area are selected.
SVN commit 475425 by okellogg: BUG:117791 - calculateTextPosition(): Don't text->set{X,Y}.