Werk #22806: Graphs: accept empty title format

Component	User interface
Title	Graphs: accept empty title format
Date	Oct 19, 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 2.5.0p18 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.4.0p39 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

If the graph options of a view or dashboard element had no title element selected (stored as an empty title format), the graph could not be shown and the crash report showed ValidationError: 1 validation error for GraphRenderOptions title_format.

An empty title format selection is now accepted, and the graph is shown without the title elements.

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