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Werk #20051: Custom snap-ins in the default sidebar no longer crash the user interface

Component User interface
Title Custom snap-ins in the default sidebar no longer crash the user interface
Date Jun 8, 2026
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
3.0.0b1
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p9
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Administrators can predefine the snap-ins shown in the sidebar for new users. If this default configuration contained a custom snap-in (one created under "Customize > Custom snap-ins"), the whole user interface crashed when a user without a personal sidebar configuration logged in.

This has been fixed. Custom snap-ins can now be used in the default sidebar configuration again. Entries that refer to a snap-in which does not exist (for example a typo or a removed snap-in) are silently ignored instead of breaking the page.

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