Bug 514938

Summary: Bulk Renaming of Files will discard the file extension of some files
Product: [Applications] dolphin Reporter: richard
Component: generalAssignee: Dolphin Bug Assignee <dolphin-bugs-null>
Status: REPORTED ---    
Severity: normal CC: dolphin-bugs-null
Priority: NOR    
Version First Reported In: 25.08.1   
Target Milestone: ---   
Platform: Kubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: A spectacle screen recording of the rename process.

Description richard 2026-01-22 16:35:07 UTC
Created attachment 188786 [details]
A spectacle screen recording of the rename process.

SUMMARY

When bulk renaming files (>1 file) some renamed files lose their file extension. I'm guessing this is a bug because the extensions may be unknown to Dolphin so it discards it during the rename process. This also happened in Kubuntu 24.04 LTS. Currently running Kubuntu 25.10 and this issue remains. 

STEPS TO REPRODUCE
1. Select > 1 file. In this case include both an "html" and a "nessus" file.
2. Rename them but do not use a "#" in them. I just want the name changed not the extension.
3. See the loss of the file extension.

OBSERVED RESULT
Some files lose their file extension.

EXPECTED RESULT
The file extension should always be retained when renaming files.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 25.10
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.2

ADDITIONAL INFORMATION
Attaching a desktop recording so hopefully that helps.