The Information panel displays the date when some file types, such as .docx have been created, but doesn't include the date they have been last modified (which the Dolphin "properties" window does show). Reproducible: Always
Duplicate of https://bugs.kde.org/show_bug.cgi?id=381470 (sorry for the forward-dupe, but that bug has more attention in it). *** This bug has been marked as a duplicate of bug 381470 ***