Version: 15.12.3 (from http://archive.ubuntu.com/ubuntu/pool/universe/g/gwenview/gwenview_15.12.3-0ubuntu1_amd64.deb). If file name of picture contains national characters, file not displayed in list. Reproducible: Always Steps to Reproduce: 1. Run "gwenview /path/to/directory". 2. Choose image to rename. 3. Press F2 to open rename dialog. 4. Add national character to name. 5. Press "enter" to confirm rename and close rename dialog. Actual Results: File (picture) will no more visible in list of files (pictures). Expected Results: Show files with any characters in names.
Works for me with Ubuntu 16.04.1 LTS org.kde.gwenview 15.12.3 and master build from sources
What is a national character? Regrdless, Burkhard says it's fixed for him.