As a long-yeared Linux user I've migrated data from various systems with various file systems to my respective target platform. Currently I am on Slackware64-current (based on 13.37) using ext4. In the past I have also used OpenSUSE and others, with ReiserFS, ext3 and even FAT.

One of my old files is named Gepäckliste.txt. This is one the files that I have been maintaining for a long while. It helps me to not forget anything when I am preparing my next travel (job or holiday). As you can see, the filename contains an umlaut: ä.

While Dolphin has no problems with special characters, overall, it doesn't display the filename of this old file correctly, and it doesn't allow me to rename or delete it. The options for renaming and deletion are available in the context menu, but selecting them has no effect. On the CLI I have no problem to rename or delete the file, or to move it to another location.

BTW, this is a long-yeared bug, and I am bit surprised that I didn't find a ticket for it in the bug database.

Reproducible: Always

Steps to Reproduce:
1. Create a file on another system with a different file system, such as FAT, and give it a name containing a special character, such as an umlaut: ä, ö, ü or ß. The locale should be set to support CP-852 or ISO 8859-1 character sets or similar. I assume, that it actually doesn't matter much, but Just don't use UTF-8.
2. Copy the file over to a system with ext4 and UTF-8 support.
3. Open the folder with the file in Dolphin. You should immediately see the problem.
4. Try to rename or delete the file within Dolphin.
Actual Results:  
Renaming and deleting the file is not possible.

Expected Results:  
File is renamed or deleted.