Created attachment 105179 [details] Screenshot illustrating the problem. openSUSE 42.2, $ rpm -q dolphin kate plasma5-workspace-libs dolphin-17.03.80-81.16.x86_64 kate-17.04.0-4.3.x86_64 plasma5-workspace-libs-5.9.4-306.2.x86_64 mkdir /tmp/dir cd /tmp/dir touch a1 a11 a112 a2 a211 a22 a221 a223 a3 a33 a331 Then compare the order of files in the output of "ls -alF" with the order of files in Dolphin or Kate's Open dialog when sorting by name. Clearly, the latter applications are not doing the expected thing. See attached screenshot.
Works fine here, in the Open file dialog. What's your version of Qt? For Dolphin, you need to disable Natural Sorting in Settings -> General -> Behavior -> Sorting Mode.
$ rpm -q libQt5Core5 libQt5Core5-5.8.0-287.1.x86_64 Disabling Natural sorting in Dolphin fixes this annoyance is Dolphin only. Is there not a KDE-wide config setting?
openSUSE has a patched kio. See http://bugzilla.opensuse.org/1033668 Should not happen with default repositories, but you are using backport repos.