Created attachment 167114 [details]
What Kickoff displays, compared to KDE Menu Editor

SUMMARY
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***


STEPS TO REPRODUCE
1. Create a new Panel in Plasma 6 and add the Application Launcher (Kickoff)
2. Create a sub-menu within any major category (Internet, Development, Office, etc.) using the KDE Menu Editor and add or move an application launcher inside
3. Save changes, and attempt to view the category

OBSERVED RESULT
Contents of category are sorted alphabetically, sub-menus ignored except their contents, which are just shown in the main category as if they were in the main category, not the sub menu.

EXPECTED RESULT
Contents of category are sorted as set in KDE Menu Editor, including the sub-menu, with its contents solely in that sub-menu.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Garuda Linux (Kernel: 6.7.9-zen1-1-zen (64-bit))
(available in About System)
KDE Plasma Version: 6.0.1
KDE Frameworks Version:  6.0.0
Qt Version:  6.6.2

ADDITIONAL INFORMATION
Issue was present before Plasma 6, unsure of when it had originally become an issue.
Turning "Sort Alphabetically" on or off does not change if submenus are correctly shown.