Version: digikam 1.2 (svn 1086154) (using KDE 4.3.2) OS: Linux Installed from: Ubuntu Packages If when moving a tag by drag & drop in the left sidepanel "Caption/Tags" mouse pointer at some point crosses over the My Tags window boundary, then hovering over a tag with sub-tags won't expand or collapse the tag hierarchy below the mouse pointer.
This works in svn 1092129. So marking bug as fixed.