Bug 515394

Summary:	Kate opens two comparison tool windows instead of one
Product:	[Applications] kate	Reporter:	Ghislain <ghislain12777>
Component:	general	Assignee:	KWrite Developers <kwrite-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	christoph
Priority:	NOR
Version First Reported In:	25.08.1
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Ghislain 2026-02-01 16:24:10 UTC

SUMMARY  
Kate opens two comparison tool windows when using “Compare with Active Document Using…” instead of one.

STEPS TO REPRODUCE
Open two files in Kate so that both appear as tabs.
Right‑click one of the file tabs.
Select “Compare with Active Document Using…” and choose Meld or Kompare.

OBSERVED RESULT  
The selected comparison tool opens two separate windows instead of a single comparison window.

EXPECTED RESULT  
Only one comparison window should open, showing the diff between the two selected documents.

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

ADDITIONAL INFORMATION
The issue occurs consistently with both Meld and Kompare.
Reproducible every time using the steps above.

Comment 1 Christoph Cullmann 2026-02-01 18:24:27 UTC

Can not reproduce that with Kate 25.12.1 and Kompare.