Bug 468007

Summary:	Opening emacs launcher new application instance instead of replacing launcher icon
Product:	[I don't know] kde	Reporter:	t.soernes
Component:	general	Assignee:	Unassigned bugs <unassigned-bugs-null>
Status:	RESOLVED DOWNSTREAM
Severity:	normal	CC:	nate
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description t.soernes 2023-03-31 17:09:17 UTC

SUMMARY
When I open emacs (icon #3) it opens a new instance (icon #5 on the taskbar),  instead of the launcher icon turning into the application instance https://i.imgur.com/E1RbdGK.png


STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Fedora 37
(available in About System)
KDE Plasma Version: 5.27.3
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

Comment 1 t.soernes 2023-03-31 17:10:30 UTC

When I open emacs (icon #3 on the taskbar in the picture below) it opens a new instance (icon #5 on the taskbar), instead of the launcher icon turning into the application instance https://i.imgur.com/E1RbdGK.png

Comment 2 t.soernes 2023-03-31 17:11:12 UTC

*** Bug 468008 has been marked as a duplicate of this bug. ***

Comment 3 Nate Graham 2023-04-04 18:47:28 UTC

This happens because the Task Manager fails to map the open Emacs window to the desktop file used for its launcher. Perhaps it changes its desktop file or its NET_WM_STRING property after being launched, which can cause this to break. Ultimately this is a bug in Emacs itself; I'd recommend reporting it to that app's developer. Thanks!