There are duplicate entries under the Recent Documents category when a file is opened more than once. E.g. if I open filename.txt n times, even if it is in the same application, it shows up n times under Recent Documents (where n is less than or equal to the max. number of allowable entries). This is also a problem for Application Launcher, but only when searching. If you navigate to the History tab, there are no duplicates.
Git commit 9583c7df0492411eb697e5e5babb08abdb16c4a2 by Kai Uwe Broulik. Committed on 25/08/2017 at 09:26. Pushed by broulik into branch 'master'. [Recent Documents Runner] Avoid duplicate results Differential Revision: https://phabricator.kde.org/D7476 M +13 -2 runners/recentdocuments/recentdocuments.cpp https://commits.kde.org/plasma-workspace/9583c7df0492411eb697e5e5babb08abdb16c4a2