Created attachment 88217 [details] automatic backtrace of the crash I wanted to create a new bookmark within a new created folder directly from the surface. I also tryed to to create just the folder via "manage bookmarks" with no result. no new folder but the application didn't crashed.
It happens to me too. But I have OpenSUSE Tumbleweed, with KDE, obviously. The bug it's reproduced at my computer exactly the same as Axel told.
Trying to offer more info: 4.14.3 is the exact version of KDE. Linux 3.17.4-1-desktop openSUSE 20141208 (Tumbleweed) (i586) AMD Athlon(tm) 64 X2 Dual Core Processor 6000+
*** This bug has been marked as a duplicate of bug 331494 ***